Drinking Water Quality Report
City of Fresno Water Division Utilities - Fresno, CA
Serves 390,350 people
Nitrate
Nitrate enters drinking water sources from fertilizer runoff, leaching septic tanks, and erosion of natural deposits; it is also emitted by chemical, petrochemical and metal-finishing industries.Testing Summary
| Contaminant | Average/ Maximum Result | Health Limit Exceeded | Legal Limit Exceeded | Testing History -Tested  -Detected  -Over Health Guidelines  -Over Legal Limit* |
|---|---|---|---|---|
| NitrateNitrate enters drinking water sources from fertilizer runoff, leaching septic tanks, and erosion of natural deposits; it is also emitted by chemical, petrochemical and metal-finishing industries. | 5 ppm 10.9 ppm | Yes 10 ppm | Yes 10 ppm |  |
| NOTE: Each dot in the above graph represents one month. * Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance. | ||||
Health Based and Legal Limits for Nitrate
Health Based Limits for Nitrate
| Standard | Description | Level |
|---|---|---|
| Maximum Contaminant Limit (MCL) | The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency. | 10 ppm |
| Maximum Contaminant Limit Goal (MCLG) | A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency. | 10 ppm |
| California Public Health Goals | Defined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health. | 10 ppm |
| EPA Human Health Water Quality Criteria | Water quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. (http://water.epa.gov/scitech/swguidance/standards/current/index.cfm) Source: U.S. Environmental Protection Agency. | 10 ppm |
| Children's health-based limit for 1-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 10 ppm |
| Children's health-based limit for 10-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 10 ppm |
Testing Results
| Testing Date | Average Result | Samples taken that day | Number of Non-Detects | Range of Results |
|---|---|---|---|---|
| 2009-04-13 | 6.36 ppm | 36 | 0 | 2.71 to 13.78 ppm |
| 2009-04-07 | 7.29 ppm | 8 | 0 | 2.71 to 13.78 ppm |
| 2009-04-06 | 6.4 ppm | 13 | 0 | 2.15 to 8.81 ppm |
| 2009-04-02 | 6.78 ppm | 2 | 0 | 6.55 to 7 ppm |
| 2009-03-31 | 1.82 ppm | 21 | 4 | 0 to 5.65 ppm |
| 2009-03-30 | 6.07 ppm | 36 | 0 | 1.04 to 13.78 ppm |
| 2009-03-27 | 3.14 ppm | 16 | 1 | 0 to 5.87 ppm |
| 2009-03-26 | 2.14 ppm | 20 | 6 | 0 to 7.23 ppm |
| 2009-03-25 | 3.15 ppm | 20 | 0 | 0.63 to 7 ppm |
| 2009-03-24 | 4.75 ppm | 11 | 0 | 1.04 to 8.13 ppm |
| 2009-03-23 | 5.58 ppm | 49 | 0 | 0.9 to 13.78 ppm |
| 2009-03-20 | 4.65 ppm | 12 | 0 | 2.71 to 7.23 ppm |
| 2009-03-19 | 3.5 ppm | 20 | 0 | 0.68 to 7.91 ppm |
| 2009-03-18 | 2.52 ppm | 20 | 1 | 0 to 6.1 ppm |
| 2009-03-17 | 2.37 ppm | 22 | 0 | 0.77 to 5.65 ppm |
| 2009-03-16 | 6.31 ppm | 35 | 0 | 2.08 to 13.55 ppm |
| 2009-03-12 | 6.95 ppm | 6 | 0 | 1.02 to 13.78 ppm |
| 2009-03-10 | 7.13 ppm | 18 | 0 | 4.29 to 8.81 ppm |
| 2009-03-09 | 4.4 ppm | 13 | 0 | 2.26 to 7.23 ppm |
| 2009-03-04 | 6.38 ppm | 35 | 0 | 2.21 to 13.78 ppm |
| 2009-03-03 | 1.72 ppm | 5 | 0 | 0.99 to 2.26 ppm |
| 2009-02-26 | 6.59 ppm | 6 | 0 | 4.52 to 9.04 ppm |
| 2009-02-25 | 1.64 ppm | 2 | 0 | 1.02 to 2.26 ppm |
| 2009-02-23 | 6.35 ppm | 29 | 0 | 2.26 to 14.01 ppm |
| 2009-02-18 | 9.94 ppm | 4 | 0 | 2.71 to 14.91 ppm |
| 2009-02-17 | 5.64 ppm | 27 | 0 | 1.04 to 9.49 ppm |
| 2009-02-11 | 9.49 ppm | 4 | 0 | 2.71 to 13.78 ppm |
| 2009-02-10 | 5.53 ppm | 4 | 0 | 5.42 to 5.65 ppm |
| 2009-02-09 | 5.31 ppm | 25 | 0 | 1.02 to 8.58 ppm |
| 2009-02-04 | 5.59 ppm | 4 | 0 | 4.07 to 7.23 ppm |
| 2009-02-03 | 6.78 ppm | 2 | 0 | 6.78 ppm |
| 2009-02-02 | 5.51 ppm | 36 | 0 | 0.97 to 13.33 ppm |
| 2009-01-27 | 1.62 ppm | 2 | 0 | 0.99 to 2.24 ppm |
| 2009-01-26 | 6.16 ppm | 35 | 0 | 2.24 to 13.55 ppm |
| 2009-01-21 | 1.62 ppm | 2 | 0 | 0.99 to 2.24 ppm |
| 2009-01-20 | 6.19 ppm | 35 | 0 | 2.19 to 13.55 ppm |
| 2009-01-13 | 4.84 ppm | 27 | 0 | 1.02 to 7 ppm |
| 2009-01-12 | 8.61 ppm | 10 | 0 | 2.71 to 13.33 ppm |
| 2009-01-09 | 6.95 ppm | 4 | 0 | 6.78 to 7.23 ppm |
| 2009-01-08 | 3.47 ppm | 5 | 0 | 2.06 to 5.42 ppm |
| 2009-01-07 | 3.95 ppm | 8 | 0 | 0.99 to 5.87 ppm |
| 2009-01-06 | 6.94 ppm | 20 | 0 | 2.71 to 13.33 ppm |
| 2009-01-05 | 3.62 ppm | 11 | 0 | 0.52 to 6.1 ppm |
| 2008-12-30 | 1.58 ppm | 2 | 0 | 0.99 to 2.17 ppm |
| 2008-12-29 | 5.95 ppm | 43 | 0 | 2.19 to 13.55 ppm |
| 2008-12-23 | 1.63 ppm | 2 | 0 | 0.99 to 2.26 ppm |
| 2008-12-22 | 5.76 ppm | 45 | 0 | 2.15 to 13.55 ppm |
| 2008-12-18 | 3.95 ppm | 3 | 0 | 0.99 to 5.42 ppm |
| 2008-12-17 | 2.21 ppm | 1 | 0 | 2.21 ppm |
| 2008-12-16 | 7.23 ppm | 18 | 0 | 2.71 to 13.55 ppm |
| 2008-12-15 | 4.82 ppm | 25 | 0 | 2.17 to 7.23 ppm |
| 2008-12-11 | 5.38 ppm | 9 | 0 | 1.02 to 7 ppm |
| 2008-12-10 | 4.76 ppm | 11 | 0 | 2.19 to 7.23 ppm |
| 2008-12-09 | 7.71 ppm | 14 | 0 | 2.71 to 13.55 ppm |
| 2008-12-08 | 4.47 ppm | 13 | 0 | 2.19 to 6.55 ppm |
| 2008-12-04 | 5.72 ppm | 10 | 0 | 3.16 to 7 ppm |
| 2008-12-03 | 3.66 ppm | 19 | 0 | 1.02 to 6.55 ppm |
| 2008-12-02 | 6.97 ppm | 22 | 0 | 2.71 to 13.55 ppm |
| 2008-12-01 | 5.87 ppm | 2 | 0 | 5.2 to 6.55 ppm |
| 2008-11-26 | 1.68 ppm | 2 | 0 | 1.11 to 2.26 ppm |
| 2008-11-24 | 6.29 ppm | 45 | 0 | 2.26 to 14.01 ppm |
| 2008-11-21 | 4.89 ppm | 3 | 0 | 2.94 to 5.87 ppm |
| 2008-11-19 | 1.62 ppm | 2 | 0 | 1.02 to 2.21 ppm |
| 2008-11-18 | 5.35 ppm | 13 | 0 | 3.39 to 7.68 ppm |
| 2008-11-17 | 6.37 ppm | 37 | 0 | 2.24 to 13.55 ppm |
| 2008-11-13 | 4.57 ppm | 14 | 0 | 1.02 to 6.33 ppm |
| 2008-11-12 | 4.91 ppm | 11 | 0 | 2.15 to 7.23 ppm |
| 2008-11-10 | 7.18 ppm | 24 | 0 | 2.71 to 13.55 ppm |
| 2008-11-07 | 6.96 ppm | 26 | 0 | 1.94 to 13.78 ppm |
| 2008-11-06 | 3.52 ppm | 11 | 0 | 1.02 to 6.1 ppm |
| 2008-11-05 | 5.32 ppm | 19 | 0 | 2.21 to 8.58 ppm |
| 2008-11-04 | 6.55 ppm | 1 | 0 | 6.55 ppm |
| 2008-10-31 | 5.72 ppm | 6 | 0 | 2.94 to 7.68 ppm |
| 2008-10-29 | 8.21 ppm | 3 | 0 | 7.68 to 8.58 ppm |
| 2008-10-28 | 7.73 ppm | 25 | 0 | 2.71 to 13.78 ppm |
| 2008-10-27 | 4.09 ppm | 20 | 1 | 0 to 6.33 ppm |
| 2008-10-23 | 8 ppm | 10 | 0 | 2.71 to 13.55 ppm |
| 2008-10-22 | 7.73 ppm | 18 | 0 | 4.29 to 10.39 ppm |
| 2008-10-20 | 4.66 ppm | 17 | 0 | 2.21 to 6.33 ppm |
| 2008-10-16 | 4.18 ppm | 2 | 0 | 2.71 to 5.65 ppm |
| 2008-10-15 | 2.62 ppm | 3 | 0 | 1.08 to 4.52 ppm |
| 2008-10-14 | 4.55 ppm | 14 | 0 | 2.26 to 6.33 ppm |
| 2008-10-13 | 7.79 ppm | 28 | 0 | 2.71 to 13.55 ppm |
| 2008-10-10 | 3.16 ppm | 2 | 0 | 3.16 ppm |
| 2008-10-09 | 7.19 ppm | 6 | 0 | 5.42 to 8.58 ppm |
| 2008-10-08 | 3.66 ppm | 11 | 0 | 1.04 to 7.23 ppm |
| 2008-10-07 | 6.94 ppm | 23 | 0 | 2.21 to 13.78 ppm |
| 2008-10-06 | 7.42 ppm | 7 | 0 | 4.29 to 10.39 ppm |
| 2008-10-01 | 5.42 ppm | 18 | 1 | 0 to 10.39 ppm |
| 2008-09-29 | 6.41 ppm | 29 | 0 | 2.19 to 13.55 ppm |
| 2008-09-25 | 6.27 ppm | 16 | 0 | 3.39 to 8.58 ppm |
| 2008-09-24 | 6.55 ppm | 23 | 0 | 1.04 to 15.14 ppm |
| 2008-09-23 | 7.23 ppm | 4 | 0 | 4.97 to 8.81 ppm |
| 2008-09-17 | 6.27 ppm | 35 | 0 | 0.99 to 10.62 ppm |
| 2008-09-16 | 3.12 ppm | 3 | 0 | 2.19 to 4.97 ppm |
| 2008-09-11 | 7.01 ppm | 18 | 0 | 1.04 to 13.78 ppm |
| 2008-09-10 | 4.97 ppm | 1 | 0 | 4.97 ppm |
| 2008-09-09 | 4.5 ppm | 10 | 0 | 2.26 to 6.78 ppm |
| 2008-09-08 | 5.85 ppm | 12 | 0 | 2.71 to 10.17 ppm |
| 2008-09-05 | 7.51 ppm | 4 | 0 | 2.71 to 10.39 ppm |
| 2008-09-04 | 6.9 ppm | 20 | 0 | 2.94 to 13.78 ppm |
| 2008-09-03 | 5.64 ppm | 28 | 0 | 1.04 to 10.39 ppm |
| 2008-08-28 | 2.76 ppm | 3 | 0 | 1.08 to 4.97 ppm |
| 2008-08-27 | 7.34 ppm | 2 | 0 | 7 to 7.68 ppm |
| 2008-08-26 | 7.69 ppm | 20 | 0 | 2.71 to 13.1 ppm |
| 2008-08-25 | 4.75 ppm | 18 | 0 | 2.17 to 6.33 ppm |
| 2008-08-22 | 7.45 ppm | 2 | 0 | 7.23 to 7.68 ppm |
| 2008-08-20 | 6.3 ppm | 42 | 0 | 2.17 to 13.55 ppm |
| 2008-08-15 | 4.68 ppm | 9 | 0 | 2.15 to 6.55 ppm |
| 2008-08-14 | 7 ppm | 10 | 0 | 2.71 to 13.1 ppm |
| 2008-08-13 | 6.02 ppm | 18 | 0 | 3.16 to 8.36 ppm |
| 2008-08-12 | 3.42 ppm | 13 | 1 | 0 to 5.42 ppm |
| 2008-08-11 | 5.28 ppm | 28 | 0 | 1.04 to 13.55 ppm |
| 2008-08-08 | 6.23 ppm | 17 | 0 | 2.94 to 13.78 ppm |
| 2008-08-07 | 4.24 ppm | 10 | 0 | 1.13 to 9.71 ppm |
| 2008-08-06 | 6.98 ppm | 19 | 0 | 4.29 to 10.17 ppm |
| 2008-08-05 | 2.75 ppm | 11 | 0 | 0.86 to 3.84 ppm |
| 2008-08-04 | 5.76 ppm | 6 | 0 | 2.94 to 7.68 ppm |
| 2008-08-01 | 5.16 ppm | 12 | 0 | 3.39 to 7 ppm |
| 2008-07-31 | 4.13 ppm | 4 | 0 | 1.67 to 7.23 ppm |
| 2008-07-30 | 4.76 ppm | 5 | 0 | 1.2 to 10.39 ppm |
| 2008-07-29 | 4.31 ppm | 12 | 0 | 0.7 to 7.68 ppm |
| 2008-07-28 | 5.64 ppm | 36 | 0 | 1.13 to 14.01 ppm |
| 2008-07-25 | 3.73 ppm | 14 | 1 | 0 to 14.01 ppm |
| 2008-07-24 | 3.19 ppm | 10 | 1 | 0 to 6.1 ppm |
| 2008-07-23 | 3.81 ppm | 10 | 0 | 0.66 to 5.65 ppm |
| 2008-07-22 | 2.76 ppm | 20 | 1 | 0 to 5.65 ppm |
| 2008-07-21 | 5.44 ppm | 35 | 0 | 1.4 to 9.04 ppm |
| 2008-07-18 | 3.23 ppm | 10 | 0 | 1.42 to 5.2 ppm |
| 2008-07-17 | 4.7 ppm | 5 | 0 | 3.39 to 9.49 ppm |
| 2008-07-16 | 3.43 ppm | 10 | 0 | 1.78 to 5.87 ppm |
| 2008-07-15 | 4 ppm | 24 | 0 | 1.11 to 7 ppm |
| 2008-07-14 | 4.95 ppm | 32 | 0 | 0.5 to 9.71 ppm |
| 2008-07-11 | 5.22 ppm | 28 | 0 | 1.02 to 9.71 ppm |
| 2008-07-10 | 2.15 ppm | 11 | 0 | 0.47 to 4.74 ppm |
| 2008-07-09 | 3.61 ppm | 14 | 0 | 1.92 to 5.87 ppm |
| 2008-07-08 | 5.25 ppm | 27 | 0 | 0.9 to 11.07 ppm |
| 2008-07-03 | 7.91 ppm | 4 | 0 | 3.61 to 9.94 ppm |
| 2008-07-01 | 3.9 ppm | 6 | 0 | 1.08 to 8.13 ppm |
| 2008-06-30 | 6.61 ppm | 39 | 0 | 2.71 to 13.55 ppm |
| 2008-06-27 | 8.08 ppm | 4 | 0 | 4.29 to 9.94 ppm |
| 2008-06-25 | 6.89 ppm | 25 | 0 | 3.39 to 9.94 ppm |
| 2008-06-24 | 5.95 ppm | 8 | 0 | 1.06 to 13.78 ppm |
| 2008-06-23 | 4.94 ppm | 8 | 0 | 4.07 to 5.65 ppm |
| 2008-06-19 | 9.34 ppm | 3 | 0 | 8.36 to 9.94 ppm |
| 2008-06-18 | 4.63 ppm | 2 | 0 | 4.52 to 4.74 ppm |
| 2008-06-16 | 6.15 ppm | 35 | 0 | 1.02 to 13.33 ppm |
| 2008-06-13 | 2.06 ppm | 3 | 0 | 1.22 to 2.48 ppm |
| 2008-06-10 | 6.76 ppm | 16 | 0 | 2.71 to 13.78 ppm |
| 2008-06-09 | 6.2 ppm | 24 | 0 | 4.07 to 8.36 ppm |
| 2008-06-06 | 1.24 ppm | 2 | 1 | 0 to 2.48 ppm |
| 2008-06-05 | 4.61 ppm | 11 | 0 | 0.88 to 7.68 ppm |
| 2008-06-04 | 5.78 ppm | 17 | 0 | 4.07 to 7.68 ppm |
| 2008-06-03 | 4.44 ppm | 6 | 0 | 3.39 to 5.65 ppm |
| 2008-06-02 | 7.11 ppm | 21 | 0 | 2.71 to 13.1 ppm |
| 2008-05-28 | 2.63 ppm | 4 | 1 | 0 to 4.74 ppm |
| 2008-05-27 | 6.58 ppm | 30 | 0 | 2.71 to 13.1 ppm |
| 2008-05-22 | 1.47 ppm | 1 | 0 | 1.47 ppm |
| 2008-05-20 | 7.3 ppm | 10 | 0 | 4.74 to 8.58 ppm |
| 2008-05-19 | 6.05 ppm | 22 | 0 | 2.71 to 13.1 ppm |
| 2008-05-16 | 10.9 ppm | 4 | 0 | 3.16 to 17.62 ppm |
| 2008-05-13 | 5.2 ppm | 6 | 0 | 4.29 to 5.65 ppm |
| 2008-05-12 | 6.7 ppm | 25 | 0 | 2.71 to 13.33 ppm |
| 2008-05-09 | 4.74 ppm | 13 | 0 | 2.06 to 7.23 ppm |
| 2008-05-08 | 6.64 ppm | 18 | 0 | 2.71 to 13.33 ppm |
| 2008-05-07 | 7.79 ppm | 2 | 0 | 7.23 to 8.36 ppm |
| 2008-04-29 | 10.79 ppm | 4 | 0 | 2.94 to 16.26 ppm |
| 2008-04-28 | 6.26 ppm | 26 | 0 | 1.02 to 13.33 ppm |
| 2008-04-25 | 5.2 ppm | 2 | 0 | 5.2 ppm |
| 2008-04-21 | 6.64 ppm | 32 | 0 | 1.04 to 16.04 ppm |
| 2008-04-18 | 8.25 ppm | 4 | 0 | 3.16 to 16.49 ppm |
| 2008-04-17 | 8.36 ppm | 3 | 0 | 2.94 to 16.49 ppm |
| 2008-04-15 | 3.83 ppm | 7 | 0 | 2.19 to 5.2 ppm |
| 2008-04-14 | 6.93 ppm | 19 | 0 | 1.06 to 13.55 ppm |
| 2008-04-08 | 3.18 ppm | 9 | 0 | 1.04 to 5.65 ppm |
| 2008-04-07 | 7.3 ppm | 16 | 0 | 2.71 to 13.1 ppm |
| 2008-04-04 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2008-04-03 | 7.04 ppm | 12 | 0 | 2.71 to 13.1 ppm |
| 2008-04-01 | 4.21 ppm | 9 | 0 | 1.04 to 8.13 ppm |
| 2008-03-25 | 8.11 ppm | 10 | 0 | 2.71 to 13.55 ppm |
| 2008-03-24 | 4.87 ppm | 10 | 0 | 1.08 to 6.78 ppm |
| 2008-03-19 | 3.54 ppm | 5 | 0 | 1.06 to 6.1 ppm |
| 2008-03-18 | 4.28 ppm | 10 | 0 | 0.63 to 8.81 ppm |
| 2008-03-17 | 6.16 ppm | 19 | 0 | 2.71 to 13.1 ppm |
| 2008-03-14 | 5.14 ppm | 4 | 0 | 2.71 to 7.68 ppm |
| 2008-03-13 | 4.97 ppm | 5 | 0 | 2.71 to 6.78 ppm |
| 2008-03-12 | 4.78 ppm | 12 | 0 | 2.94 to 7 ppm |
| 2008-03-11 | 4.06 ppm | 18 | 0 | 1.06 to 7.23 ppm |
| 2008-03-10 | 8.13 ppm | 8 | 0 | 2.48 to 12.88 ppm |
| 2008-03-07 | 1.08 ppm | 1 | 0 | 1.08 ppm |
| 2008-03-06 | 4.5 ppm | 3 | 0 | 2.19 to 5.65 ppm |
| 2008-03-04 | 6.78 ppm | 1 | 0 | 6.78 ppm |
| 2008-03-03 | 6.86 ppm | 16 | 0 | 2.48 to 12.88 ppm |
| 2008-02-29 | 2.32 ppm | 2 | 0 | 0.56 to 4.07 ppm |
| 2008-02-28 | 3.17 ppm | 10 | 0 | 1.29 to 7 ppm |
| 2008-02-27 | 2.53 ppm | 9 | 2 | 0 to 5.87 ppm |
| 2008-02-26 | 2.16 ppm | 9 | 1 | 0 to 4.52 ppm |
| 2008-02-25 | 5.11 ppm | 30 | 0 | 0.75 to 13.33 ppm |
| 2008-02-22 | 2.18 ppm | 8 | 0 | 0.61 to 3.16 ppm |
| 2008-02-21 | 2.47 ppm | 11 | 2 | 0 to 6.55 ppm |
| 2008-02-20 | 3.37 ppm | 9 | 0 | 1.47 to 6.78 ppm |
| 2008-02-19 | 4.92 ppm | 27 | 2 | 0 to 8.58 ppm |
| 2008-02-15 | 2.28 ppm | 4 | 0 | 1.58 to 3.84 ppm |
| 2008-02-14 | 1.83 ppm | 10 | 0 | 0.68 to 3.16 ppm |
| 2008-02-13 | 2.79 ppm | 8 | 0 | 1.51 to 4.07 ppm |
| 2008-02-12 | 2.77 ppm | 11 | 0 | 1.24 to 6.1 ppm |
| 2008-02-11 | 6.11 ppm | 35 | 0 | 1.06 to 13.1 ppm |
| 2008-02-08 | 2.92 ppm | 10 | 0 | 1.08 to 5.42 ppm |
| 2008-02-07 | 4.3 ppm | 23 | 1 | 0 to 12.88 ppm |
| 2008-02-06 | 5.19 ppm | 21 | 0 | 1.38 to 8.58 ppm |
| 2008-02-05 | 6.78 ppm | 2 | 0 | 6.78 ppm |
| 2008-02-04 | 1.04 ppm | 2 | 0 | 1.04 ppm |
| 2008-02-01 | 1.04 ppm | 1 | 0 | 1.04 ppm |
| 2008-01-30 | 4.86 ppm | 2 | 0 | 4.74 to 4.97 ppm |
| 2008-01-29 | 6.89 ppm | 10 | 0 | 2.48 to 12.88 ppm |
| 2008-01-28 | 6.73 ppm | 14 | 0 | 2.08 to 8.58 ppm |
| 2008-01-23 | 7.1 ppm | 23 | 0 | 2.48 to 12.88 ppm |
| 2008-01-22 | 3.44 ppm | 6 | 0 | 1.08 to 4.74 ppm |
| 2008-01-17 | 2.19 ppm | 1 | 0 | 2.19 ppm |
| 2008-01-15 | 4.37 ppm | 8 | 0 | 1.06 to 5.65 ppm |
| 2008-01-14 | 6.34 ppm | 31 | 0 | 2.06 to 13.1 ppm |
| 2008-01-10 | 6.33 ppm | 6 | 0 | 5.65 to 6.78 ppm |
| 2008-01-09 | 5.24 ppm | 9 | 0 | 1.11 to 7.23 ppm |
| 2008-01-08 | 4.52 ppm | 11 | 0 | 2.08 to 6.78 ppm |
| 2008-01-07 | 7.26 ppm | 14 | 0 | 2.71 to 13.1 ppm |
| 2008-01-03 | 1.72 ppm | 5 | 0 | 1.08 to 2.26 ppm |
| 2008-01-02 | 6.09 ppm | 38 | 0 | 2.06 to 13.1 ppm |
| 2007-12-27 | 1.73 ppm | 5 | 0 | 1.11 to 2.26 ppm |
| 2007-12-26 | 6.09 ppm | 38 | 0 | 2.17 to 13.1 ppm |
| 2007-12-19 | 2.17 ppm | 1 | 0 | 2.17 ppm |
| 2007-12-18 | 7.36 ppm | 10 | 0 | 2.71 to 13.1 ppm |
| 2007-12-17 | 5.48 ppm | 29 | 0 | 1.11 to 8.81 ppm |
| 2007-12-12 | 4.65 ppm | 3 | 0 | 2.19 to 5.87 ppm |
| 2007-12-11 | 6.24 ppm | 24 | 0 | 1.13 to 9.04 ppm |
| 2007-12-10 | 6.64 ppm | 16 | 0 | 2.26 to 13.1 ppm |
| 2007-12-07 | 7.71 ppm | 7 | 0 | 5.87 to 10.39 ppm |
| 2007-12-06 | 4.44 ppm | 9 | 0 | 2.26 to 5.87 ppm |
| 2007-12-05 | 4.34 ppm | 13 | 0 | 1.13 to 7.23 ppm |
| 2007-12-04 | 2.53 ppm | 2 | 0 | 2.12 to 2.94 ppm |
| 2007-12-03 | 7 ppm | 18 | 0 | 2.71 to 13.1 ppm |
| 2007-11-30 | 5.2 ppm | 1 | 0 | 5.2 ppm |
| 2007-11-28 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2007-11-27 | 1.67 ppm | 2 | 0 | 1.13 to 2.21 ppm |
| 2007-11-26 | 6.53 ppm | 38 | 0 | 2.26 to 13.1 ppm |
| 2007-11-20 | 1.67 ppm | 2 | 0 | 1.15 to 2.19 ppm |
| 2007-11-19 | 6.68 ppm | 44 | 1 | 0 to 13.1 ppm |
| 2007-11-15 | 2.24 ppm | 1 | 0 | 2.24 ppm |
| 2007-11-14 | 1.15 ppm | 1 | 0 | 1.15 ppm |
| 2007-11-13 | 6.79 ppm | 47 | 0 | 2.48 to 13.1 ppm |
| 2007-11-08 | 6.7 ppm | 16 | 0 | 1.15 to 10.62 ppm |
| 2007-11-07 | 4.28 ppm | 9 | 0 | 2.01 to 6.78 ppm |
| 2007-11-06 | 7.48 ppm | 15 | 0 | 2.71 to 13.1 ppm |
| 2007-11-05 | 4.59 ppm | 10 | 0 | 2.94 to 6.78 ppm |
| 2007-10-31 | 4.74 ppm | 1 | 0 | 4.74 ppm |
| 2007-10-30 | 6.75 ppm | 38 | 0 | 2.71 to 12.88 ppm |
| 2007-10-29 | 1.65 ppm | 2 | 0 | 1.13 to 2.17 ppm |
| 2007-10-22 | 6.41 ppm | 44 | 1 | 0 to 12.88 ppm |
| 2007-10-19 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2007-10-18 | 1.13 ppm | 1 | 0 | 1.13 ppm |
| 2007-10-16 | 6.85 ppm | 36 | 1 | 0 to 12.88 ppm |
| 2007-10-15 | 4.41 ppm | 7 | 0 | 2.17 to 5.87 ppm |
| 2007-10-11 | 1.15 ppm | 1 | 0 | 1.15 ppm |
| 2007-10-10 | 6.21 ppm | 14 | 0 | 0.63 to 9.71 ppm |
| 2007-10-09 | 7.26 ppm | 22 | 0 | 2.71 to 12.65 ppm |
| 2007-10-08 | 4.66 ppm | 9 | 0 | 2.15 to 5.65 ppm |
| 2007-10-04 | 6.14 ppm | 12 | 0 | 3.39 to 9.04 ppm |
| 2007-10-03 | 4.89 ppm | 15 | 0 | 1.15 to 7.45 ppm |
| 2007-10-02 | 3.84 ppm | 2 | 0 | 3.84 ppm |
| 2007-10-01 | 7.64 ppm | 21 | 0 | 2.71 to 12.88 ppm |
| 2007-09-28 | 7.68 ppm | 4 | 0 | 3.84 to 10.17 ppm |
| 2007-09-27 | 3.16 ppm | 2 | 1 | 0 to 6.33 ppm |
| 2007-09-26 | 6.58 ppm | 8 | 0 | 2.71 to 10.62 ppm |
| 2007-09-25 | 1.13 ppm | 1 | 0 | 1.13 ppm |
| 2007-09-24 | 6.37 ppm | 46 | 0 | 2.17 to 12.88 ppm |
| 2007-09-21 | 6.27 ppm | 12 | 0 | 3.39 to 9.49 ppm |
| 2007-09-20 | 5.51 ppm | 8 | 0 | 4.07 to 7 ppm |
| 2007-09-19 | 4.51 ppm | 13 | 0 | 1.08 to 6.78 ppm |
| 2007-09-18 | 5.87 ppm | 13 | 0 | 2.21 to 8.58 ppm |
| 2007-09-17 | 6.36 ppm | 34 | 0 | 1.15 to 12.88 ppm |
| 2007-09-14 | 1.15 ppm | 1 | 0 | 1.15 ppm |
| 2007-09-13 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2007-09-12 | 4.07 ppm | 2 | 0 | 4.07 ppm |
| 2007-09-11 | 7.09 ppm | 25 | 0 | 2.71 to 12.88 ppm |
| 2007-09-10 | 6.05 ppm | 14 | 0 | 3.16 to 8.81 ppm |
| 2007-09-07 | 5.31 ppm | 14 | 0 | 1.15 to 8.58 ppm |
| 2007-09-06 | 6.75 ppm | 25 | 0 | 2.71 to 12.88 ppm |
| 2007-09-05 | 4.92 ppm | 11 | 0 | 1.99 to 8.81 ppm |
| 2007-08-30 | 9.49 ppm | 1 | 0 | 9.49 ppm |
| 2007-08-28 | 5.58 ppm | 2 | 0 | 1.22 to 9.94 ppm |
| 2007-08-27 | 6.39 ppm | 46 | 0 | 2.21 to 16.94 ppm |
| 2007-08-24 | 6.21 ppm | 2 | 0 | 6.1 to 6.33 ppm |
| 2007-08-23 | 6.82 ppm | 29 | 0 | 2.71 to 12.88 ppm |
| 2007-08-21 | 1.95 ppm | 4 | 0 | 1.17 to 2.48 ppm |
| 2007-08-20 | 5.57 ppm | 15 | 0 | 3.84 to 9.04 ppm |
| 2007-08-16 | 1.17 ppm | 1 | 0 | 1.17 ppm |
| 2007-08-15 | 4.18 ppm | 2 | 0 | 3.61 to 4.74 ppm |
| 2007-08-14 | 5.34 ppm | 23 | 0 | 2.01 to 9.26 ppm |
| 2007-08-13 | 7.23 ppm | 21 | 0 | 2.71 to 12.88 ppm |
| 2007-08-10 | 7.91 ppm | 4 | 0 | 4.29 to 9.71 ppm |
| 2007-08-09 | 4.86 ppm | 2 | 0 | 4.74 to 4.97 ppm |
| 2007-08-08 | 6.24 ppm | 26 | 0 | 2.71 to 13.33 ppm |
| 2007-08-07 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2007-08-06 | 6.58 ppm | 11 | 0 | 1.2 to 9.26 ppm |
| 2007-08-03 | 7.82 ppm | 13 | 0 | 4.74 to 10.17 ppm |
| 2007-08-02 | 5.18 ppm | 9 | 0 | 1.17 to 6.55 ppm |
| 2007-08-01 | 6.62 ppm | 24 | 0 | 2.71 to 17.85 ppm |
| 2007-07-30 | 2.17 ppm | 1 | 0 | 2.17 ppm |
| 2007-07-25 | 5.25 ppm | 18 | 0 | 2.48 to 7.91 ppm |
| 2007-07-24 | 7.13 ppm | 17 | 0 | 1.2 to 16.72 ppm |
| 2007-07-23 | 9.23 ppm | 5 | 0 | 2.12 to 17.17 ppm |
| 2007-07-19 | 10.73 ppm | 4 | 0 | 2.94 to 18.52 ppm |
| 2007-07-18 | 6.61 ppm | 20 | 0 | 2.71 to 12.65 ppm |
| 2007-07-17 | 5.12 ppm | 12 | 0 | 2.94 to 7.45 ppm |
| 2007-07-16 | 1.66 ppm | 2 | 0 | 1.2 to 2.12 ppm |
| 2007-07-13 | 6.8 ppm | 10 | 0 | 2.71 to 12.88 ppm |
| 2007-07-12 | 6.49 ppm | 4 | 0 | 5.42 to 7.45 ppm |
| 2007-07-11 | 5.47 ppm | 18 | 0 | 3.16 to 8.36 ppm |
| 2007-07-10 | 2.87 ppm | 9 | 0 | 1.15 to 5.87 ppm |
| 2007-07-05 | 4.18 ppm | 2 | 0 | 4.07 to 4.29 ppm |
| 2007-07-03 | 5.94 ppm | 32 | 0 | 2.26 to 12.65 ppm |
| 2007-06-27 | 3.51 ppm | 8 | 0 | 1.4 to 6.55 ppm |
| 2007-06-26 | 0 ppm | 2 | 2 | 0 ppm |
| 2007-06-25 | 5.67 ppm | 36 | 0 | 1.2 to 12.65 ppm |
| 2007-06-22 | 6.44 ppm | 2 | 0 | 6.33 to 6.55 ppm |
| 2007-06-18 | 5.84 ppm | 34 | 0 | 1.2 to 12.88 ppm |
| 2007-06-13 | 6.4 ppm | 12 | 0 | 1.31 to 12.88 ppm |
| 2007-06-12 | 6.39 ppm | 26 | 0 | 2.71 to 15.81 ppm |
| 2007-06-06 | 4.43 ppm | 8 | 0 | 2.94 to 6.1 ppm |
| 2007-06-05 | 5.84 ppm | 23 | 0 | 1.17 to 15.36 ppm |
| 2007-06-04 | 7.45 ppm | 12 | 0 | 2.71 to 12.65 ppm |
| 2007-06-01 | 7.13 ppm | 16 | 0 | 2.71 to 15.14 ppm |
| 2007-05-31 | 5.72 ppm | 3 | 0 | 5.42 to 6.33 ppm |
| 2007-05-30 | 1.2 ppm | 1 | 0 | 1.2 ppm |
| 2007-05-29 | 6.1 ppm | 19 | 0 | 2.19 to 12.65 ppm |
| 2007-05-24 | 9.04 ppm | 1 | 0 | 9.04 ppm |
| 2007-05-22 | 3.06 ppm | 3 | 0 | 1.06 to 5.65 ppm |
| 2007-05-21 | 6.55 ppm | 35 | 0 | 2.17 to 15.14 ppm |
| 2007-05-18 | 7.05 ppm | 9 | 0 | 5.65 to 9.04 ppm |
| 2007-05-17 | 4.99 ppm | 12 | 1 | 0 to 7.45 ppm |
| 2007-05-16 | 5.04 ppm | 20 | 0 | 2.19 to 7.91 ppm |
| 2007-05-14 | 7.05 ppm | 29 | 0 | 2.71 to 14.91 ppm |
| 2007-05-10 | 2.17 ppm | 1 | 0 | 2.17 ppm |
| 2007-05-07 | 6.58 ppm | 36 | 0 | 2.71 to 14.91 ppm |
| 2007-05-04 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2007-05-03 | 6.27 ppm | 11 | 0 | 1.99 to 15.14 ppm |
| 2007-05-02 | 5.17 ppm | 10 | 0 | 3.84 to 8.36 ppm |
| 2007-05-01 | 6.73 ppm | 16 | 0 | 2.71 to 12.2 ppm |
| 2007-04-30 | 2.17 ppm | 1 | 0 | 2.17 ppm |
| 2007-04-26 | 7.18 ppm | 5 | 0 | 2.71 to 11.75 ppm |
| 2007-04-24 | 4.97 ppm | 2 | 0 | 4.97 ppm |
| 2007-04-23 | 6.4 ppm | 30 | 0 | 2.19 to 15.14 ppm |
| 2007-04-20 | 5.2 ppm | 1 | 0 | 5.2 ppm |
| 2007-04-19 | 6.55 ppm | 3 | 0 | 4.97 to 9.71 ppm |
| 2007-04-17 | 5.8 ppm | 6 | 0 | 4.52 to 6.55 ppm |
| 2007-04-16 | 7.36 ppm | 24 | 0 | 2.26 to 15.81 ppm |
| 2007-04-10 | 6.89 ppm | 6 | 0 | 4.29 to 8.81 ppm |
| 2007-04-09 | 6.04 ppm | 25 | 0 | 2.15 to 14.68 ppm |
| 2007-04-06 | 5.23 ppm | 6 | 0 | 4.07 to 5.87 ppm |
| 2007-04-04 | 5.53 ppm | 10 | 0 | 3.61 to 7.23 ppm |
| 2007-04-03 | 7.75 ppm | 13 | 0 | 2.71 to 14.68 ppm |
| 2007-04-02 | 2.1 ppm | 3 | 0 | 1.94 to 2.26 ppm |
| 2007-03-30 | 6.1 ppm | 2 | 0 | 6.1 ppm |
| 2007-03-29 | 2.87 ppm | 8 | 0 | 0.75 to 5.42 ppm |
| 2007-03-28 | 3.95 ppm | 2 | 0 | 3.84 to 4.07 ppm |
| 2007-03-27 | 1.13 ppm | 1 | 0 | 1.13 ppm |
| 2007-03-26 | 6.45 ppm | 29 | 0 | 2.1 to 14.46 ppm |
| 2007-03-21 | 1.63 ppm | 3 | 0 | 1.08 to 2.71 ppm |
| 2007-03-20 | 4.52 ppm | 8 | 0 | 2.94 to 8.58 ppm |
| 2007-03-19 | 6.38 ppm | 28 | 0 | 2.1 to 14.46 ppm |
| 2007-03-16 | 5.42 ppm | 1 | 0 | 5.42 ppm |
| 2007-03-15 | 1.98 ppm | 7 | 0 | 1.29 to 2.71 ppm |
| 2007-03-14 | 4.13 ppm | 10 | 0 | 1.13 to 8.58 ppm |
| 2007-03-13 | 5.37 ppm | 4 | 0 | 3.16 to 7.68 ppm |
| 2007-03-12 | 5.79 ppm | 36 | 0 | 0.77 to 14.68 ppm |
| 2007-03-09 | 4.42 ppm | 21 | 0 | 2.94 to 7.23 ppm |
| 2007-03-07 | 4.86 ppm | 23 | 0 | 0.56 to 8.58 ppm |
| 2007-03-06 | 4.31 ppm | 24 | 4 | 0 to 14.46 ppm |
| 2007-03-05 | 2.61 ppm | 13 | 0 | 0.47 to 5.65 ppm |
| 2007-03-02 | 1.69 ppm | 10 | 1 | 0 to 2.94 ppm |
| 2007-03-01 | 2.7 ppm | 10 | 0 | 0.61 to 7.68 ppm |
| 2007-02-28 | 2.79 ppm | 10 | 0 | 0.77 to 4.97 ppm |
| 2007-02-27 | 2.41 ppm | 15 | 0 | 0.54 to 3.61 ppm |
| 2007-02-26 | 5.54 ppm | 37 | 0 | 1.54 to 14.46 ppm |
| 2007-02-23 | 2.55 ppm | 10 | 0 | 0.72 to 4.74 ppm |
| 2007-02-22 | 2.25 ppm | 10 | 0 | 1.15 to 4.07 ppm |
| 2007-02-21 | 2.72 ppm | 10 | 0 | 0.7 to 5.2 ppm |
| 2007-02-20 | 6.06 ppm | 30 | 0 | 1.4 to 14.46 ppm |
| 2007-02-14 | 2.16 ppm | 3 | 0 | 2.06 to 2.26 ppm |
| 2007-02-12 | 6.66 ppm | 28 | 0 | 2.71 to 14.68 ppm |
| 2007-02-07 | 5.7 ppm | 8 | 0 | 4.07 to 7 ppm |
| 2007-02-06 | 6.98 ppm | 20 | 0 | 2.71 to 14.46 ppm |
| 2007-02-05 | 2.17 ppm | 1 | 0 | 2.17 ppm |
| 2007-02-01 | 2.48 ppm | 1 | 0 | 2.48 ppm |
| 2007-01-29 | 6.53 ppm | 26 | 0 | 2.17 to 14.46 ppm |
| 2007-01-24 | 6.44 ppm | 2 | 0 | 6.33 to 6.55 ppm |
| 2007-01-23 | 7.37 ppm | 17 | 0 | 2.71 to 14.01 ppm |
| 2007-01-22 | 4.66 ppm | 9 | 0 | 2.15 to 6.1 ppm |
| 2007-01-18 | 6.52 ppm | 27 | 0 | 2.71 to 14.01 ppm |
| 2007-01-17 | 2.19 ppm | 1 | 0 | 2.19 ppm |
| 2007-01-10 | 6.49 ppm | 4 | 0 | 5.87 to 7.23 ppm |
| 2007-01-09 | 4.55 ppm | 8 | 0 | 3.39 to 5.87 ppm |
| 2007-01-08 | 7.05 ppm | 18 | 1 | 0 to 14.23 ppm |
| 2007-01-04 | 6.43 ppm | 31 | 0 | 0.63 to 14.91 ppm |
| 2007-01-03 | 2.26 ppm | 1 | 0 | 2.26 ppm |
| 2006-12-26 | 6.08 ppm | 30 | 0 | 0.47 to 14.46 ppm |
| 2006-12-22 | 4.37 ppm | 23 | 1 | 0 to 9.49 ppm |
| 2006-12-19 | 4.97 ppm | 4 | 0 | 4.07 to 5.87 ppm |
| 2006-12-18 | 6.56 ppm | 28 | 0 | 1.97 to 14.68 ppm |
| 2006-12-15 | 4.63 ppm | 2 | 0 | 4.29 to 4.97 ppm |
| 2006-12-14 | 5.37 ppm | 8 | 0 | 3.61 to 6.78 ppm |
| 2006-12-13 | 5.46 ppm | 15 | 0 | 1.9 to 9.04 ppm |
| 2006-12-11 | 6.13 ppm | 19 | 0 | 2.1 to 14.91 ppm |
| 2006-12-08 | 6.93 ppm | 3 | 0 | 6.55 to 7.23 ppm |
| 2006-12-07 | 5.7 ppm | 8 | 0 | 3.84 to 6.78 ppm |
| 2006-12-06 | 5.28 ppm | 14 | 0 | 2.48 to 7.23 ppm |
| 2006-12-05 | 5.93 ppm | 27 | 0 | 1.87 to 14.46 ppm |
| 2006-12-04 | 4.12 ppm | 11 | 0 | 2.08 to 6.1 ppm |
| 2006-12-01 | 2.44 ppm | 4 | 0 | 1.85 to 3.16 ppm |
| 2006-11-30 | 1.91 ppm | 16 | 0 | 0.5 to 4.29 ppm |
| 2006-11-29 | 2.58 ppm | 15 | 0 | 0.56 to 4.29 ppm |
| 2006-11-28 | 3.62 ppm | 20 | 0 | 1.13 to 7 ppm |
| 2006-11-27 | 5.66 ppm | 43 | 0 | 1.92 to 14.91 ppm |
| 2006-11-21 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-11-20 | 6.01 ppm | 39 | 0 | 1.97 to 14.91 ppm |
| 2006-11-15 | 6.78 ppm | 2 | 0 | 6.78 ppm |
| 2006-11-14 | 6.7 ppm | 9 | 0 | 3.84 to 9.04 ppm |
| 2006-11-13 | 5 ppm | 26 | 0 | 2.03 to 7.23 ppm |
| 2006-11-10 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-11-09 | 5.71 ppm | 17 | 0 | 2.03 to 9.04 ppm |
| 2006-11-08 | 6.1 ppm | 20 | 0 | 2.71 to 15.36 ppm |
| 2006-11-07 | 8.02 ppm | 2 | 0 | 7.91 to 8.13 ppm |
| 2006-11-06 | 6.78 ppm | 4 | 0 | 2.94 to 9.04 ppm |
| 2006-11-03 | 5.2 ppm | 3 | 0 | 3.16 to 9.26 ppm |
| 2006-11-02 | 6.36 ppm | 6 | 0 | 5.87 to 6.78 ppm |
| 2006-11-01 | 1.76 ppm | 5 | 0 | 1.13 to 2.26 ppm |
| 2006-10-31 | 7.28 ppm | 19 | 0 | 2.71 to 15.14 ppm |
| 2006-10-30 | 5.84 ppm | 18 | 0 | 1.81 to 12.65 ppm |
| 2006-10-26 | 6.21 ppm | 4 | 0 | 5.87 to 6.55 ppm |
| 2006-10-24 | 6.69 ppm | 29 | 0 | 2.03 to 15.36 ppm |
| 2006-10-23 | 5.31 ppm | 10 | 0 | 1.13 to 6.78 ppm |
| 2006-10-18 | 5.7 ppm | 4 | 0 | 5.42 to 5.87 ppm |
| 2006-10-17 | 6.68 ppm | 39 | 0 | 2.03 to 15.81 ppm |
| 2006-10-16 | 1.69 ppm | 2 | 0 | 1.13 to 2.26 ppm |
| 2006-10-12 | 6.78 ppm | 2 | 0 | 6.78 ppm |
| 2006-10-11 | 7.01 ppm | 20 | 0 | 2.03 to 15.59 ppm |
| 2006-10-10 | 4.86 ppm | 2 | 0 | 4.74 to 4.97 ppm |
| 2006-10-09 | 5.78 ppm | 21 | 0 | 1.13 to 8.58 ppm |
| 2006-10-06 | 6.33 ppm | 4 | 0 | 6.1 to 6.55 ppm |
| 2006-10-04 | 5.85 ppm | 8 | 0 | 2.03 to 9.04 ppm |
| 2006-10-03 | 3.54 ppm | 6 | 0 | 1.13 to 5.65 ppm |
| 2006-10-02 | 6.84 ppm | 30 | 0 | 1.81 to 15.59 ppm |
| 2006-09-29 | 6.55 ppm | 2 | 0 | 4.74 to 8.36 ppm |
| 2006-09-28 | 5.53 ppm | 2 | 0 | 4.74 to 6.33 ppm |
| 2006-09-27 | 5.52 ppm | 7 | 0 | 2.26 to 7.45 ppm |
| 2006-09-26 | 4.96 ppm | 30 | 0 | 2.03 to 8.58 ppm |
| 2006-09-25 | 7.15 ppm | 30 | 0 | 1.36 to 16.26 ppm |
| 2006-09-19 | 8.75 ppm | 4 | 0 | 2.71 to 12.65 ppm |
| 2006-09-18 | 5.95 ppm | 41 | 0 | 1.13 to 15.36 ppm |
| 2006-09-15 | 5.01 ppm | 6 | 0 | 3.61 to 5.87 ppm |
| 2006-09-14 | 7.38 ppm | 29 | 0 | 2.71 to 15.59 ppm |
| 2006-09-13 | 5.05 ppm | 3 | 0 | 2.03 to 6.55 ppm |
| 2006-09-12 | 3.77 ppm | 6 | 0 | 1.81 to 4.97 ppm |
| 2006-09-11 | 1.13 ppm | 1 | 0 | 1.13 ppm |
| 2006-09-08 | 3.98 ppm | 5 | 0 | 2.03 to 6.78 ppm |
| 2006-09-07 | 6.27 ppm | 43 | 0 | 1.13 to 15.36 ppm |
| 2006-08-29 | 5.08 ppm | 22 | 0 | 1.13 to 8.36 ppm |
| 2006-08-28 | 7.41 ppm | 23 | 0 | 2.71 to 15.36 ppm |
| 2006-08-22 | 1.58 ppm | 2 | 0 | 1.13 to 2.03 ppm |
| 2006-08-21 | 6.59 ppm | 42 | 0 | 2.03 to 15.36 ppm |
| 2006-08-15 | 6.37 ppm | 5 | 0 | 2.26 to 9.04 ppm |
| 2006-08-14 | 6.38 ppm | 39 | 0 | 1.13 to 15.36 ppm |
| 2006-08-11 | 7.24 ppm | 22 | 0 | 2.71 to 15.59 ppm |
| 2006-08-10 | 4.24 ppm | 8 | 0 | 1.81 to 5.87 ppm |
| 2006-08-09 | 8.02 ppm | 2 | 0 | 7.23 to 8.81 ppm |
| 2006-08-08 | 5.53 ppm | 8 | 0 | 3.16 to 7.91 ppm |
| 2006-08-07 | 1.69 ppm | 2 | 0 | 1.13 to 2.26 ppm |
| 2006-08-04 | 7.7 ppm | 11 | 0 | 5.87 to 9.94 ppm |
| 2006-08-03 | 2.94 ppm | 7 | 0 | 1.13 to 6.1 ppm |
| 2006-08-02 | 6.07 ppm | 28 | 0 | 1.81 to 14.91 ppm |
| 2006-08-01 | 5.59 ppm | 8 | 0 | 3.16 to 7.68 ppm |
| 2006-07-25 | 5.94 ppm | 14 | 0 | 2.26 to 8.58 ppm |
| 2006-07-24 | 5.92 ppm | 36 | 0 | 1.13 to 14.68 ppm |
| 2006-07-20 | 4.29 ppm | 16 | 0 | 1.13 to 7.45 ppm |
| 2006-07-19 | 7.09 ppm | 31 | 0 | 2.71 to 15.14 ppm |
| 2006-07-17 | 4.52 ppm | 2 | 0 | 4.52 ppm |
| 2006-07-12 | 2.66 ppm | 9 | 0 | 1.13 to 4.29 ppm |
| 2006-07-11 | 6.79 ppm | 37 | 0 | 2.71 to 15.36 ppm |
| 2006-07-10 | 5.53 ppm | 2 | 0 | 5.42 to 5.65 ppm |
| 2006-07-06 | 5.74 ppm | 12 | 0 | 3.61 to 7.23 ppm |
| 2006-07-05 | 4 ppm | 16 | 0 | 1.13 to 7.68 ppm |
| 2006-07-03 | 8.48 ppm | 19 | 0 | 2.71 to 15.36 ppm |
| 2006-06-29 | 1.36 ppm | 1 | 0 | 1.36 ppm |
| 2006-06-28 | 6.74 ppm | 27 | 0 | 1.81 to 15.14 ppm |
| 2006-06-27 | 4.09 ppm | 8 | 0 | 0.45 to 7.23 ppm |
| 2006-06-26 | 5.83 ppm | 26 | 0 | 3.16 to 8.58 ppm |
| 2006-06-23 | 5.93 ppm | 4 | 0 | 4.07 to 7.23 ppm |
| 2006-06-22 | 4.27 ppm | 9 | 0 | 0.9 to 6.33 ppm |
| 2006-06-21 | 6.33 ppm | 25 | 0 | 0.9 to 14.68 ppm |
| 2006-06-20 | 3.13 ppm | 7 | 0 | 0.45 to 5.87 ppm |
| 2006-06-19 | 5.56 ppm | 16 | 0 | 1.58 to 10.84 ppm |
| 2006-06-15 | 5.12 ppm | 3 | 0 | 4.07 to 6.78 ppm |
| 2006-06-14 | 5.85 ppm | 10 | 0 | 5.42 to 6.78 ppm |
| 2006-06-13 | 4.29 ppm | 2 | 0 | 4.29 ppm |
| 2006-06-12 | 6.43 ppm | 30 | 0 | 1.13 to 14.68 ppm |
| 2006-06-09 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2006-06-08 | 5.95 ppm | 37 | 0 | 1.58 to 14.68 ppm |
| 2006-06-06 | 1.43 ppm | 3 | 0 | 1.13 to 2.03 ppm |
| 2006-06-05 | 7.1 ppm | 7 | 0 | 5.65 to 8.36 ppm |
| 2006-06-02 | 2.03 ppm | 3 | 0 | 1.81 to 2.26 ppm |
| 2006-05-31 | 6.59 ppm | 18 | 0 | 2.71 to 15.36 ppm |
| 2006-05-30 | 6.11 ppm | 22 | 0 | 1.13 to 11.97 ppm |
| 2006-05-26 | 2.71 ppm | 1 | 0 | 2.71 ppm |
| 2006-05-24 | 1.17 ppm | 1 | 0 | 1.17 ppm |
| 2006-05-23 | 5.95 ppm | 9 | 0 | 2.03 to 10.17 ppm |
| 2006-05-22 | 6.14 ppm | 25 | 0 | 1.58 to 11.97 ppm |
| 2006-05-19 | 6.16 ppm | 12 | 0 | 3.84 to 8.36 ppm |
| 2006-05-18 | 7.36 ppm | 7 | 0 | 5.87 to 8.36 ppm |
| 2006-05-15 | 4.97 ppm | 12 | 0 | 1.13 to 11.3 ppm |
| 2006-05-11 | 6.11 ppm | 18 | 0 | 1.58 to 11.97 ppm |
| 2006-05-10 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-05-09 | 5.2 ppm | 4 | 0 | 4.07 to 6.33 ppm |
| 2006-05-08 | 3.44 ppm | 4 | 0 | 1.13 to 5.42 ppm |
| 2006-05-04 | 6.35 ppm | 8 | 0 | 3.61 to 8.13 ppm |
| 2006-05-03 | 4.35 ppm | 8 | 0 | 1.58 to 6.1 ppm |
| 2006-05-02 | 5.53 ppm | 8 | 0 | 1.81 to 12.42 ppm |
| 2006-05-01 | 1.13 ppm | 2 | 0 | 1.13 ppm |
| 2006-04-28 | 1.58 ppm | 2 | 0 | 1.58 ppm |
| 2006-04-26 | 3.39 ppm | 2 | 0 | 3.39 ppm |
| 2006-04-25 | 4.14 ppm | 3 | 0 | 1.13 to 5.65 ppm |
| 2006-04-24 | 5.58 ppm | 13 | 0 | 2.03 to 8.58 ppm |
| 2006-04-21 | 3.84 ppm | 3 | 0 | 1.81 to 6.33 ppm |
| 2006-04-18 | 2.03 ppm | 1 | 0 | 2.03 ppm |
| 2006-04-17 | 4.65 ppm | 20 | 0 | 0.9 to 8.13 ppm |
| 2006-04-14 | 1.58 ppm | 2 | 0 | 1.58 ppm |
| 2006-04-13 | 5.76 ppm | 2 | 0 | 5.65 to 5.87 ppm |
| 2006-04-12 | 2.53 ppm | 5 | 0 | 1.81 to 3.39 ppm |
| 2006-04-10 | 5.84 ppm | 14 | 0 | 3.61 to 8.13 ppm |
| 2006-04-07 | 6.27 ppm | 4 | 0 | 3.61 to 8.13 ppm |
| 2006-04-06 | 2.11 ppm | 3 | 0 | 1.36 to 2.71 ppm |
| 2006-04-05 | 5.12 ppm | 6 | 0 | 3.61 to 6.1 ppm |
| 2006-04-04 | 4.33 ppm | 6 | 0 | 1.58 to 6.33 ppm |
| 2006-04-03 | 5.7 ppm | 4 | 0 | 4.29 to 7.23 ppm |
| 2006-03-31 | 2.71 ppm | 1 | 0 | 2.71 ppm |
| 2006-03-30 | 2.03 ppm | 1 | 0 | 2.03 ppm |
| 2006-03-29 | 3.57 ppm | 5 | 0 | 1.36 to 4.74 ppm |
| 2006-03-28 | 2.28 ppm | 35 | 2 | 0 to 6.33 ppm |
| 2006-03-27 | 5.16 ppm | 20 | 0 | 2.03 to 8.36 ppm |
| 2006-03-24 | 2.72 ppm | 16 | 0 | 0.45 to 5.42 ppm |
| 2006-03-23 | 3.02 ppm | 34 | 0 | 0.68 to 8.13 ppm |
| 2006-03-22 | 3.68 ppm | 36 | 1 | 0 to 7 ppm |
| 2006-03-21 | 2.71 ppm | 16 | 0 | 0.9 to 5.42 ppm |
| 2006-03-20 | 4.36 ppm | 30 | 0 | 1.36 to 8.81 ppm |
| 2006-03-15 | 2.48 ppm | 4 | 0 | 1.58 to 3.39 ppm |
| 2006-03-13 | 5.84 ppm | 12 | 0 | 3.84 to 8.36 ppm |
| 2006-03-08 | 5.83 ppm | 10 | 0 | 3.84 to 8.36 ppm |
| 2006-03-06 | 3.61 ppm | 6 | 0 | 1.58 to 5.87 ppm |
| 2006-03-03 | 1.58 ppm | 2 | 0 | 1.58 ppm |
| 2006-03-02 | 3.52 ppm | 7 | 0 | 2.03 to 5.87 ppm |
| 2006-02-27 | 5.76 ppm | 10 | 0 | 3.61 to 8.13 ppm |
| 2006-02-21 | 4.91 ppm | 16 | 0 | 1.58 to 8.13 ppm |
| 2006-02-15 | 5.42 ppm | 2 | 0 | 5.42 ppm |
| 2006-02-13 | 4.86 ppm | 14 | 0 | 1.81 to 8.13 ppm |
| 2006-02-09 | 6.38 ppm | 4 | 0 | 3.84 to 8.13 ppm |
| 2006-02-08 | 4.31 ppm | 10 | 0 | 1.58 to 6.33 ppm |
| 2006-02-07 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2006-02-06 | 6.78 ppm | 2 | 0 | 6.78 ppm |
| 2006-02-02 | 2.48 ppm | 5 | 0 | 1.81 to 3.16 ppm |
| 2006-02-01 | 3.58 ppm | 6 | 0 | 1.58 to 5.87 ppm |
| 2006-01-30 | 6.01 ppm | 12 | 0 | 3.61 to 8.13 ppm |
| 2006-01-26 | 2.6 ppm | 4 | 0 | 1.58 to 3.61 ppm |
| 2006-01-25 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-01-23 | 6.1 ppm | 12 | 0 | 3.61 to 8.36 ppm |
| 2006-01-17 | 5.22 ppm | 16 | 0 | 1.58 to 8.36 ppm |
| 2006-01-13 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-01-10 | 5.41 ppm | 14 | 0 | 1.81 to 8.58 ppm |
| 2006-01-05 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2006-01-04 | 5.38 ppm | 17 | 0 | 2.03 to 8.36 ppm |
| 2006-01-03 | 2.52 ppm | 6 | 0 | 1.81 to 3.16 ppm |
| 2005-12-28 | 6.3 ppm | 10 | 0 | 3.61 to 8.36 ppm |
| 2005-12-27 | 4.74 ppm | 4 | 0 | 3.61 to 5.87 ppm |
| 2005-12-19 | 6.08 ppm | 14 | 0 | 3.39 to 9.49 ppm |
| 2005-12-15 | 6.1 ppm | 1 | 0 | 6.1 ppm |
| 2005-12-14 | 5.76 ppm | 4 | 0 | 3.84 to 8.58 ppm |
| 2005-12-13 | 5.8 ppm | 26 | 0 | 3.16 to 8.13 ppm |
| 2005-12-12 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2005-12-07 | 5.53 ppm | 2 | 0 | 5.42 to 5.65 ppm |
| 2005-12-06 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-12-01 | 5.42 ppm | 2 | 0 | 5.42 ppm |
| 2005-11-29 | 6.26 ppm | 10 | 0 | 3.84 to 8.36 ppm |
| 2005-11-28 | 3.44 ppm | 8 | 0 | 1.58 to 4.97 ppm |
| 2005-11-21 | 5.05 ppm | 18 | 0 | 1.58 to 8.13 ppm |
| 2005-11-16 | 2.03 ppm | 2 | 0 | 2.03 ppm |
| 2005-11-14 | 5.37 ppm | 16 | 0 | 3.39 to 8.36 ppm |
| 2005-11-09 | 4.15 ppm | 8 | 0 | 2.03 to 6.1 ppm |
| 2005-11-08 | 6.33 ppm | 15 | 0 | 3.61 to 8.58 ppm |
| 2005-11-07 | 2.48 ppm | 4 | 0 | 1.36 to 3.61 ppm |
| 2005-11-04 | 2.18 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2005-11-02 | 4.24 ppm | 12 | 0 | 2.03 to 6.55 ppm |
| 2005-11-01 | 6.74 ppm | 13 | 0 | 3.84 to 8.81 ppm |
| 2005-10-26 | 3.73 ppm | 4 | 0 | 3.61 to 3.84 ppm |
| 2005-10-24 | 6.87 ppm | 15 | 0 | 4.07 to 8.81 ppm |
| 2005-10-19 | 5.2 ppm | 2 | 0 | 5.2 ppm |
| 2005-10-17 | 6.83 ppm | 27 | 0 | 2.71 to 12.2 ppm |
| 2005-10-11 | 6.33 ppm | 4 | 0 | 5.42 to 7.23 ppm |
| 2005-10-10 | 6.42 ppm | 27 | 0 | 2.71 to 12.2 ppm |
| 2005-10-07 | 7.77 ppm | 5 | 0 | 6.78 to 8.81 ppm |
| 2005-10-05 | 4.6 ppm | 23 | 0 | 0.68 to 8.81 ppm |
| 2005-10-04 | 3.07 ppm | 10 | 0 | 1.36 to 7 ppm |
| 2005-10-03 | 6.58 ppm | 14 | 0 | 2.71 to 12.2 ppm |
| 2005-09-28 | 5.66 ppm | 14 | 0 | 1.36 to 8.58 ppm |
| 2005-09-27 | 5.82 ppm | 17 | 1 | 0 to 9.04 ppm |
| 2005-09-26 | 6.73 ppm | 40 | 0 | 2.94 to 11.97 ppm |
| 2005-09-22 | 5.65 ppm | 4 | 0 | 5.42 to 5.87 ppm |
| 2005-09-21 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-09-19 | 6.77 ppm | 33 | 0 | 2.48 to 14.01 ppm |
| 2005-09-14 | 4.26 ppm | 8 | 0 | 1.36 to 6.1 ppm |
| 2005-09-13 | 6.33 ppm | 1 | 0 | 6.33 ppm |
| 2005-09-12 | 6.95 ppm | 33 | 0 | 2.71 to 15.36 ppm |
| 2005-09-08 | 3.24 ppm | 6 | 0 | 1.81 to 4.07 ppm |
| 2005-09-07 | 4.52 ppm | 3 | 0 | 1.36 to 6.1 ppm |
| 2005-09-06 | 6.71 ppm | 39 | 0 | 2.71 to 14.01 ppm |
| 2005-09-02 | 2.03 ppm | 3 | 0 | 1.81 to 2.26 ppm |
| 2005-08-30 | 4.83 ppm | 16 | 0 | 1.36 to 13.78 ppm |
| 2005-08-29 | 6.4 ppm | 33 | 0 | 2.71 to 11.97 ppm |
| 2005-08-26 | 6.55 ppm | 4 | 0 | 4.07 to 7.91 ppm |
| 2005-08-25 | 2.54 ppm | 4 | 0 | 1.36 to 3.84 ppm |
| 2005-08-22 | 6.19 ppm | 48 | 0 | 2.26 to 14.68 ppm |
| 2005-08-18 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-08-16 | 6.17 ppm | 48 | 0 | 2.48 to 13.55 ppm |
| 2005-08-11 | 4.29 ppm | 5 | 0 | 2.48 to 5.42 ppm |
| 2005-08-10 | 3.77 ppm | 10 | 1 | 0 to 5.87 ppm |
| 2005-08-09 | 6.21 ppm | 4 | 0 | 4.07 to 7.45 ppm |
| 2005-08-08 | 6.61 ppm | 32 | 0 | 2.48 to 14.01 ppm |
| 2005-08-04 | 4.67 ppm | 6 | 0 | 4.07 to 5.87 ppm |
| 2005-08-03 | 4.05 ppm | 11 | 0 | 1.13 to 7.68 ppm |
| 2005-08-02 | 5.31 ppm | 4 | 0 | 5.2 to 5.42 ppm |
| 2005-08-01 | 6.29 ppm | 34 | 0 | 2.48 to 12.88 ppm |
| 2005-07-27 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-07-26 | 4.81 ppm | 10 | 0 | 4.07 to 5.65 ppm |
| 2005-07-25 | 6.82 ppm | 34 | 0 | 2.71 to 12.88 ppm |
| 2005-07-21 | 3.84 ppm | 6 | 0 | 1.36 to 5.65 ppm |
| 2005-07-20 | 6.79 ppm | 28 | 0 | 2.71 to 12.88 ppm |
| 2005-07-19 | 4.66 ppm | 11 | 0 | 1.58 to 7.23 ppm |
| 2005-07-18 | 5.31 ppm | 2 | 0 | 5.2 to 5.42 ppm |
| 2005-07-15 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-07-13 | 4.17 ppm | 9 | 0 | 1.81 to 5.87 ppm |
| 2005-07-12 | 4.93 ppm | 6 | 0 | 4.07 to 5.87 ppm |
| 2005-07-11 | 6.49 ppm | 32 | 0 | 2.26 to 12.88 ppm |
| 2005-07-07 | 5.24 ppm | 24 | 0 | 2.26 to 13.78 ppm |
| 2005-07-06 | 1.36 ppm | 2 | 0 | 1.36 ppm |
| 2005-07-05 | 7.19 ppm | 20 | 0 | 2.48 to 13.1 ppm |
| 2005-06-30 | 1.81 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2005-06-29 | 6.64 ppm | 23 | 0 | 2.71 to 13.78 ppm |
| 2005-06-27 | 6.61 ppm | 28 | 0 | 2.48 to 13.78 ppm |
| 2005-06-23 | 4.45 ppm | 10 | 0 | 2.26 to 7.45 ppm |
| 2005-06-22 | 5.37 ppm | 19 | 0 | 1.13 to 12.88 ppm |
| 2005-06-21 | 5.56 ppm | 24 | 0 | 2.26 to 8.58 ppm |
| 2005-06-20 | 6.61 ppm | 30 | 0 | 2.48 to 13.55 ppm |
| 2005-06-17 | 4.1 ppm | 6 | 0 | 2.26 to 6.55 ppm |
| 2005-06-16 | 7.23 ppm | 12 | 0 | 2.48 to 13.55 ppm |
| 2005-06-15 | 6.63 ppm | 12 | 0 | 2.71 to 11.52 ppm |
| 2005-06-14 | 5.35 ppm | 6 | 0 | 4.52 to 6.33 ppm |
| 2005-06-13 | 4.94 ppm | 8 | 0 | 3.84 to 6.55 ppm |
| 2005-06-08 | 4.92 ppm | 13 | 0 | 3.61 to 5.87 ppm |
| 2005-06-07 | 6.66 ppm | 26 | 0 | 2.48 to 13.78 ppm |
| 2005-06-06 | 2.03 ppm | 2 | 0 | 2.03 ppm |
| 2005-06-03 | 6.48 ppm | 20 | 0 | 2.71 to 11.75 ppm |
| 2005-06-01 | 5.2 ppm | 2 | 0 | 5.2 ppm |
| 2005-05-31 | 4.81 ppm | 10 | 0 | 3.84 to 6.1 ppm |
| 2005-05-25 | 2.94 ppm | 3 | 0 | 2.26 to 4.29 ppm |
| 2005-05-24 | 5.75 ppm | 22 | 0 | 3.84 to 8.58 ppm |
| 2005-05-23 | 5.05 ppm | 6 | 0 | 3.84 to 6.1 ppm |
| 2005-05-18 | 5.87 ppm | 7 | 0 | 3.61 to 8.13 ppm |
| 2005-05-17 | 5.56 ppm | 20 | 0 | 3.61 to 8.36 ppm |
| 2005-05-16 | 2.26 ppm | 2 | 0 | 2.26 ppm |
| 2005-05-13 | 10.56 ppm | 4 | 0 | 7.23 to 14.01 ppm |
| 2005-05-12 | 3.39 ppm | 1 | 0 | 3.39 ppm |
| 2005-05-11 | 4.69 ppm | 4 | 0 | 1.81 to 7.23 ppm |
| 2005-05-10 | 5.15 ppm | 10 | 0 | 2.26 to 9.26 ppm |
| 2005-05-09 | 5.47 ppm | 30 | 0 | 2.03 to 8.58 ppm |
| 2005-05-06 | 3.52 ppm | 5 | 0 | 2.26 to 6.78 ppm |
| 2005-05-04 | 5.58 ppm | 7 | 0 | 4.29 to 8.58 ppm |
| 2005-05-03 | 4.71 ppm | 6 | 0 | 3.16 to 6.1 ppm |
| 2005-05-02 | 5.65 ppm | 27 | 1 | 0 to 8.58 ppm |
| 2005-04-29 | 4.29 ppm | 4 | 0 | 2.26 to 7.23 ppm |
| 2005-04-28 | 3.16 ppm | 4 | 0 | 3.16 ppm |
| 2005-04-27 | 5.5 ppm | 3 | 0 | 3.84 to 7.23 ppm |
| 2005-04-26 | 3.74 ppm | 14 | 0 | 0.9 to 8.13 ppm |
| 2005-04-25 | 5.46 ppm | 19 | 0 | 2.26 to 8.36 ppm |
| 2005-04-22 | 2.9 ppm | 7 | 0 | 1.36 to 4.29 ppm |
| 2005-04-21 | 3.99 ppm | 33 | 1 | 0 to 8.58 ppm |
| 2005-04-19 | 2.74 ppm | 18 | 1 | 0 to 7.45 ppm |
| 2005-04-18 | 5.65 ppm | 4 | 0 | 5.2 to 6.1 ppm |
| 2005-04-15 | 2.58 ppm | 10 | 2 | 0 to 6.33 ppm |
| 2005-04-14 | 1.99 ppm | 15 | 0 | 0.68 to 3.16 ppm |
| 2005-04-12 | 2 ppm | 8 | 0 | 1.13 to 2.94 ppm |
| 2005-04-11 | 5.79 ppm | 22 | 0 | 3.61 to 8.58 ppm |
| 2005-04-08 | 3.46 ppm | 16 | 0 | 2.03 to 7.45 ppm |
| 2005-04-07 | 2.48 ppm | 15 | 0 | 0.68 to 4.29 ppm |
| 2005-04-06 | 4.54 ppm | 37 | 1 | 0 to 8.58 ppm |
| 2005-04-05 | 2.24 ppm | 15 | 0 | 0.9 to 4.29 ppm |
| 2005-03-28 | 5.44 ppm | 24 | 0 | 2.26 to 8.58 ppm |
| 2005-03-23 | 5.65 ppm | 22 | 0 | 3.16 to 8.58 ppm |
| 2005-03-21 | 2.26 ppm | 2 | 0 | 2.26 ppm |
| 2005-03-16 | 1.61 ppm | 8 | 1 | 0 to 3.16 ppm |
| 2005-03-15 | 6.26 ppm | 10 | 0 | 4.29 to 8.36 ppm |
| 2005-03-14 | 4.97 ppm | 6 | 0 | 3.61 to 6.1 ppm |
| 2005-03-13 | 5.14 ppm | 4 | 0 | 4.29 to 5.87 ppm |
| 2005-03-10 | 5.65 ppm | 2 | 0 | 5.65 ppm |
| 2005-03-09 | 4.97 ppm | 3 | 0 | 4.29 to 6.1 ppm |
| 2005-03-08 | 5.33 ppm | 5 | 0 | 1.36 to 7.45 ppm |
| 2005-03-07 | 4.81 ppm | 24 | 0 | 1.36 to 8.58 ppm |
| 2005-03-04 | 4.72 ppm | 10 | 0 | 3.16 to 7 ppm |
| 2005-03-03 | 4.27 ppm | 9 | 0 | 1.13 to 6.78 ppm |
| 2005-03-02 | 3.28 ppm | 28 | 2 | 0 to 6.33 ppm |
| 2005-03-01 | 3.47 ppm | 11 | 1 | 0 to 6.78 ppm |
| 2005-02-28 | 4.56 ppm | 20 | 0 | 0.45 to 8.58 ppm |
| 2005-02-25 | 3.6 ppm | 16 | 0 | 0.9 to 7 ppm |
| 2005-02-24 | 4.08 ppm | 25 | 0 | 0.68 to 7.91 ppm |
| 2005-02-23 | 1.76 ppm | 9 | 0 | 0.68 to 2.94 ppm |
| 2005-02-22 | 1.71 ppm | 7 | 0 | 0.45 to 2.26 ppm |
| 2005-02-18 | 2.26 ppm | 12 | 0 | 1.13 to 4.74 ppm |
| 2005-02-17 | 3.21 ppm | 14 | 1 | 0 to 7.45 ppm |
| 2005-02-16 | 4.38 ppm | 36 | 0 | 1.36 to 8.81 ppm |
| 2005-02-15 | 2.08 ppm | 10 | 0 | 0.9 to 3.84 ppm |
| 2005-02-14 | 4.35 ppm | 4 | 0 | 3.61 to 5.2 ppm |
| 2005-02-11 | 5.2 ppm | 8 | 0 | 3.61 to 6.33 ppm |
| 2005-02-10 | 4.86 ppm | 2 | 0 | 4.74 to 4.97 ppm |
| 2005-02-09 | 1.24 ppm | 2 | 0 | 1.13 to 1.36 ppm |
| 2005-02-07 | 5.71 ppm | 19 | 0 | 2.26 to 8.58 ppm |
| 2005-02-01 | 5.86 ppm | 27 | 0 | 2.26 to 8.81 ppm |
| 2005-01-31 | 2.26 ppm | 2 | 0 | 2.26 ppm |
| 2005-01-25 | 5.53 ppm | 26 | 0 | 2.26 to 8.58 ppm |
| 2005-01-24 | 5.7 ppm | 4 | 0 | 5.42 to 6.33 ppm |
| 2005-01-18 | 5.64 ppm | 25 | 0 | 2.26 to 8.81 ppm |
| 2005-01-14 | 5.11 ppm | 11 | 0 | 2.71 to 6.33 ppm |
| 2005-01-12 | 6.72 ppm | 4 | 0 | 3.84 to 8.58 ppm |
| 2005-01-10 | 5.54 ppm | 15 | 0 | 2.26 to 8.81 ppm |
| 2005-01-05 | 2.94 ppm | 4 | 0 | 2.26 to 3.61 ppm |
| 2005-01-03 | 5.9 ppm | 30 | 0 | 2.26 to 11.97 ppm |
| 2004-12-30 | 4.93 ppm | 16 | 0 | 2.26 to 7.23 ppm |
| 2004-12-28 | 6.36 ppm | 18 | 0 | 2.26 to 12.2 ppm |
| 2004-12-23 | 6.1 ppm | 2 | 0 | 6.1 ppm |
| 2004-12-21 | 5.76 ppm | 34 | 0 | 2.26 to 11.52 ppm |
| 2004-12-20 | 2.03 ppm | 2 | 0 | 2.03 ppm |
| 2004-12-16 | 6.4 ppm | 6 | 0 | 5.87 to 7.23 ppm |
| 2004-12-14 | 5.56 ppm | 8 | 0 | 2.94 to 7.23 ppm |
| 2004-12-13 | 5.53 ppm | 36 | 0 | 2.03 to 11.75 ppm |
| 2004-12-09 | 6.25 ppm | 35 | 0 | 2.26 to 11.75 ppm |
| 2004-12-08 | 4.48 ppm | 13 | 0 | 2.71 to 6.1 ppm |
| 2004-12-06 | 2.03 ppm | 2 | 0 | 1.81 to 2.26 ppm |
| 2004-12-02 | 4.67 ppm | 15 | 0 | 2.94 to 6.1 ppm |
| 2004-11-30 | 2.15 ppm | 2 | 0 | 2.03 to 2.26 ppm |
| 2004-11-29 | 6.56 ppm | 21 | 0 | 2.26 to 11.75 ppm |
| 2004-11-24 | 4.63 ppm | 6 | 0 | 3.39 to 5.42 ppm |
| 2004-11-22 | 5.59 ppm | 39 | 0 | 2.03 to 11.52 ppm |
| 2004-11-18 | 4.24 ppm | 4 | 0 | 3.39 to 4.97 ppm |
| 2004-11-17 | 4.74 ppm | 4 | 0 | 2.71 to 5.87 ppm |
| 2004-11-16 | 6.21 ppm | 2 | 0 | 6.1 to 6.33 ppm |
| 2004-11-15 | 5.65 ppm | 35 | 0 | 2.03 to 11.52 ppm |
| 2004-11-12 | 5.38 ppm | 10 | 0 | 3.39 to 6.55 ppm |
| 2004-11-10 | 4.74 ppm | 4 | 0 | 2.71 to 5.87 ppm |
| 2004-11-09 | 6.32 ppm | 23 | 0 | 2.26 to 11.52 ppm |
| 2004-11-08 | 2.03 ppm | 2 | 0 | 2.03 ppm |
| 2004-11-04 | 4.69 ppm | 18 | 0 | 2.03 to 6.55 ppm |
| 2004-11-01 | 6.68 ppm | 27 | 0 | 2.26 to 11.75 ppm |
| 2004-10-27 | 6.68 ppm | 27 | 0 | 2.26 to 11.75 ppm |
| 2004-10-26 | 0.56 ppm | 2 | 0 | 0.45 to 0.68 ppm |
| 2004-10-25 | 4.95 ppm | 14 | 0 | 2.94 to 7 ppm |
| 2004-10-20 | 6.17 ppm | 32 | 0 | 2.26 to 11.97 ppm |
| 2004-10-19 | 6.16 ppm | 8 | 0 | 4.29 to 8.58 ppm |
| 2004-10-18 | 2.15 ppm | 2 | 0 | 2.03 to 2.26 ppm |
| 2004-10-14 | 4.74 ppm | 9 | 0 | 2.26 to 6.55 ppm |
| 2004-10-13 | 6.31 ppm | 12 | 0 | 2.94 to 8.36 ppm |
| 2004-10-12 | 6.2 ppm | 23 | 0 | 2.03 to 11.97 ppm |
| 2004-10-11 | 4.97 ppm | 5 | 0 | 4.07 to 6.1 ppm |
| 2004-10-08 | 5.76 ppm | 2 | 0 | 4.74 to 6.78 ppm |
| 2004-10-07 | 6.16 ppm | 46 | 0 | 2.26 to 12.2 ppm |
| 2004-10-04 | 1.75 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2004-09-30 | 5.17 ppm | 8 | 0 | 4.29 to 6.55 ppm |
| 2004-09-28 | 6.79 ppm | 31 | 0 | 2.26 to 12.42 ppm |
| 2004-09-27 | 4.42 ppm | 16 | 0 | 1.36 to 7.91 ppm |
| 2004-09-23 | 6.57 ppm | 31 | 0 | 2.26 to 11.97 ppm |
| 2004-09-22 | 4.07 ppm | 4 | 0 | 3.84 to 4.52 ppm |
| 2004-09-21 | 1.69 ppm | 4 | 0 | 1.36 to 2.03 ppm |
| 2004-09-20 | 5.2 ppm | 13 | 0 | 2.94 to 7.91 ppm |
| 2004-09-16 | 6.33 ppm | 47 | 0 | 2.26 to 11.97 ppm |
| 2004-09-15 | 5.54 ppm | 21 | 0 | 2.94 to 8.58 ppm |
| 2004-09-14 | 4.5 ppm | 10 | 0 | 0.68 to 7.45 ppm |
| 2004-09-13 | 3.31 ppm | 6 | 0 | 1.36 to 6.33 ppm |
| 2004-09-09 | 5.16 ppm | 14 | 0 | 2.94 to 8.13 ppm |
| 2004-09-08 | 5.01 ppm | 5 | 0 | 4.29 to 5.87 ppm |
| 2004-09-07 | 5.91 ppm | 37 | 0 | 1.36 to 11.97 ppm |
| 2004-09-02 | 4.74 ppm | 17 | 0 | 1.36 to 8.13 ppm |
| 2004-09-01 | 4.25 ppm | 6 | 0 | 3.61 to 5.42 ppm |
| 2004-08-31 | 6.57 ppm | 29 | 0 | 2.26 to 11.97 ppm |
| 2004-08-30 | 1.86 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2004-08-26 | 4.37 ppm | 3 | 0 | 2.26 to 5.42 ppm |
| 2004-08-25 | 6.88 ppm | 26 | 0 | 2.48 to 11.97 ppm |
| 2004-08-23 | 4.61 ppm | 23 | 0 | 1.36 to 7.91 ppm |
| 2004-08-18 | 6.82 ppm | 21 | 0 | 2.26 to 11.97 ppm |
| 2004-08-17 | 6.08 ppm | 10 | 0 | 4.52 to 8.58 ppm |
| 2004-08-16 | 4.55 ppm | 20 | 0 | 1.58 to 8.36 ppm |
| 2004-08-12 | 3.19 ppm | 9 | 0 | 0.45 to 7.91 ppm |
| 2004-08-11 | 5.87 ppm | 4 | 0 | 5.42 to 6.33 ppm |
| 2004-08-10 | 6.59 ppm | 29 | 0 | 2.26 to 11.97 ppm |
| 2004-08-09 | 3.93 ppm | 15 | 0 | 1.36 to 5.87 ppm |
| 2004-08-04 | 1.86 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2004-08-03 | 6.15 ppm | 39 | 0 | 2.26 to 11.75 ppm |
| 2004-08-02 | 5.65 ppm | 11 | 0 | 3.16 to 8.13 ppm |
| 2004-07-29 | 7.62 ppm | 14 | 0 | 2.48 to 11.97 ppm |
| 2004-07-28 | 5.8 ppm | 27 | 0 | 2.26 to 8.58 ppm |
| 2004-07-27 | 4.08 ppm | 17 | 0 | 1.36 to 6.33 ppm |
| 2004-07-21 | 4.72 ppm | 9 | 0 | 2.26 to 5.65 ppm |
| 2004-07-20 | 6.48 ppm | 47 | 0 | 2.48 to 11.52 ppm |
| 2004-07-19 | 1.81 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2004-07-15 | 4.61 ppm | 5 | 0 | 2.26 to 5.42 ppm |
| 2004-07-14 | 6.11 ppm | 15 | 0 | 4.52 to 8.36 ppm |
| 2004-07-13 | 5.87 ppm | 29 | 0 | 1.36 to 11.75 ppm |
| 2004-07-12 | 4.74 ppm | 6 | 0 | 3.61 to 6.33 ppm |
| 2004-07-09 | 5.99 ppm | 6 | 0 | 4.97 to 7 ppm |
| 2004-07-08 | 5.81 ppm | 50 | 0 | 1.36 to 11.3 ppm |
| 2004-07-07 | 2.26 ppm | 2 | 0 | 2.26 ppm |
| 2004-07-01 | 5.87 ppm | 2 | 0 | 5.87 ppm |
| 2004-06-29 | 5.25 ppm | 31 | 0 | 1.36 to 11.07 ppm |
| 2004-06-28 | 5.65 ppm | 22 | 0 | 2.48 to 10.84 ppm |
| 2004-06-25 | 5.58 ppm | 7 | 0 | 4.97 to 6.55 ppm |
| 2004-06-24 | 5.94 ppm | 40 | 0 | 2.26 to 8.13 ppm |
| 2004-06-23 | 6.71 ppm | 16 | 0 | 2.48 to 10.84 ppm |
| 2004-06-22 | 2.94 ppm | 8 | 1 | 0 to 6.33 ppm |
| 2004-06-21 | 4.85 ppm | 11 | 0 | 3.39 to 6.1 ppm |
| 2004-06-18 | 5.2 ppm | 2 | 0 | 4.74 to 5.65 ppm |
| 2004-06-17 | 2.15 ppm | 2 | 0 | 2.03 to 2.26 ppm |
| 2004-06-16 | 5.76 ppm | 8 | 0 | 1.36 to 10.62 ppm |
| 2004-06-15 | 5.8 ppm | 40 | 0 | 2.03 to 10.84 ppm |
| 2004-06-11 | 4.07 ppm | 3 | 0 | 1.36 to 5.42 ppm |
| 2004-06-10 | 5.65 ppm | 4 | 0 | 4.97 to 6.1 ppm |
| 2004-06-09 | 6.31 ppm | 14 | 0 | 2.71 to 10.39 ppm |
| 2004-06-08 | 5.21 ppm | 16 | 0 | 1.36 to 10.39 ppm |
| 2004-06-07 | 4.46 ppm | 17 | 1 | 0 to 6.55 ppm |
| 2004-06-04 | 1.86 ppm | 4 | 0 | 1.36 to 2.26 ppm |
| 2004-06-03 | 4.62 ppm | 13 | 0 | 3.39 to 6.55 ppm |
| 2004-06-02 | 5.53 ppm | 6 | 0 | 4.97 to 6.1 ppm |
| 2004-06-01 | 6.29 ppm | 25 | 0 | 2.48 to 10.62 ppm |
| 2004-05-27 | 5.03 ppm | 4 | 0 | 4.52 to 5.42 ppm |
| 2004-05-26 | 6.19 ppm | 12 | 0 | 3.84 to 8.13 ppm |
| 2004-05-25 | 4.64 ppm | 13 | 0 | 1.36 to 10.39 ppm |
| 2004-05-24 | 5.21 ppm | 15 | 0 | 3.61 to 6.55 ppm |
| 2004-05-21 | 6.55 ppm | 15 | 0 | 2.71 to 10.39 ppm |
| 2004-05-19 | 4.34 ppm | 5 | 0 | 3.61 to 5.87 ppm |
| 2004-05-18 | 6.49 ppm | 14 | 0 | 2.48 to 10.39 ppm |
| 2004-05-17 | 3.68 ppm | 11 | 0 | 1.58 to 6.1 ppm |
| 2004-05-14 | 5.82 ppm | 23 | 0 | 1.58 to 11.3 ppm |
| 2004-05-12 | 5.27 ppm | 6 | 0 | 4.52 to 5.87 ppm |
| 2004-05-11 | 3.42 ppm | 8 | 0 | 1.36 to 6.78 ppm |
| 2004-05-10 | 5.5 ppm | 3 | 0 | 4.97 to 6.55 ppm |
| 2004-05-05 | 4.94 ppm | 16 | 0 | 3.84 to 6.1 ppm |
| 2004-05-04 | 6.42 ppm | 7 | 0 | 5.42 to 7.45 ppm |
| 2004-05-03 | 10.62 ppm | 1 | 0 | 10.62 ppm |
| 2004-04-28 | 4.88 ppm | 18 | 0 | 3.61 to 6.33 ppm |
| 2004-04-27 | 2.03 ppm | 1 | 0 | 2.03 ppm |
| 2004-04-26 | 4.8 ppm | 12 | 0 | 1.58 to 7 ppm |
| 2004-04-21 | 6.33 ppm | 10 | 0 | 5.87 to 7.23 ppm |
| 2004-04-20 | 2.03 ppm | 2 | 0 | 1.81 to 2.26 ppm |
| 2004-04-19 | 3.77 ppm | 15 | 0 | 1.36 to 6.55 ppm |
| 2004-04-13 | 4.46 ppm | 4 | 1 | 0 to 6.55 ppm |
| 2004-04-12 | 4.84 ppm | 25 | 0 | 1.58 to 7.23 ppm |
| 2004-04-09 | 4.63 ppm | 2 | 0 | 4.52 to 4.74 ppm |
| 2004-04-07 | 6.49 ppm | 4 | 0 | 6.33 to 6.55 ppm |
| 2004-04-06 | 5.31 ppm | 12 | 0 | 3.61 to 7.23 ppm |
| 2004-04-05 | 5.03 ppm | 8 | 0 | 1.58 to 6.33 ppm |
| 2004-04-02 | 6.55 ppm | 2 | 0 | 6.55 ppm |
| 2004-04-01 | 1.72 ppm | 5 | 0 | 1.36 to 2.26 ppm |
| 2004-03-31 | 4.12 ppm | 12 | 0 | 1.36 to 6.55 ppm |
| 2004-03-30 | 6.33 ppm | 10 | 0 | 5.87 to 7.23 ppm |
| 2004-03-24 | 4.51 ppm | 19 | 1 | 0 to 7.91 ppm |
| 2004-03-23 | 5.53 ppm | 26 | 0 | 2.71 to 7.68 ppm |
| 2004-03-22 | 3.35 ppm | 33 | 0 | 0.68 to 7.68 ppm |
| 2004-03-19 | 3.44 ppm | 9 | 0 | 1.58 to 9.04 ppm |
| 2004-03-18 | 3.18 ppm | 34 | 0 | 0.9 to 10.17 ppm |
| 2004-03-16 | 4.97 ppm | 20 | 0 | 0.45 to 8.58 ppm |
| 2004-03-15 | 1.69 ppm | 6 | 0 | 1.13 to 2.26 ppm |
| 2004-03-12 | 3.19 ppm | 9 | 1 | 0 to 5.87 ppm |
| 2004-03-11 | 2.72 ppm | 18 | 0 | 0.9 to 6.1 ppm |
| 2004-03-10 | 2.58 ppm | 22 | 0 | 0.45 to 6.33 ppm |
| 2004-03-09 | 4.38 ppm | 23 | 0 | 0.45 to 7.68 ppm |
| 2004-03-04 | 4.57 ppm | 4 | 0 | 3.61 to 5.65 ppm |
| 2004-03-03 | 2.11 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2004-03-01 | 6.42 ppm | 10 | 0 | 5.87 to 7.45 ppm |
| 2004-02-24 | 5.47 ppm | 13 | 0 | 2.03 to 7.45 ppm |
| 2004-02-23 | 5.03 ppm | 4 | 0 | 3.39 to 6.55 ppm |
| 2004-02-19 | 5.08 ppm | 4 | 0 | 3.61 to 6.55 ppm |
| 2004-02-18 | 6.42 ppm | 10 | 0 | 5.87 to 7.23 ppm |
| 2004-02-17 | 2.11 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2004-02-11 | 5.42 ppm | 6 | 0 | 3.61 to 6.55 ppm |
| 2004-02-10 | 6.41 ppm | 8 | 0 | 5.87 to 7.23 ppm |
| 2004-02-09 | 2.11 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2004-02-04 | 2.11 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2004-02-03 | 5.53 ppm | 6 | 0 | 3.61 to 7.23 ppm |
| 2004-02-02 | 6.21 ppm | 8 | 0 | 5.87 to 6.55 ppm |
| 2004-01-27 | 5.03 ppm | 4 | 0 | 3.61 to 6.55 ppm |
| 2004-01-26 | 5.18 ppm | 13 | 0 | 2.03 to 7 ppm |
| 2004-01-21 | 3.61 ppm | 2 | 0 | 3.61 ppm |
| 2004-01-20 | 5.51 ppm | 13 | 0 | 2.03 to 7.23 ppm |
| 2004-01-15 | 2.11 ppm | 3 | 0 | 2.03 to 2.26 ppm |
| 2004-01-14 | 4.74 ppm | 4 | 0 | 3.61 to 5.87 ppm |
| 2004-01-13 | 6.55 ppm | 2 | 0 | 6.55 ppm |
| 2004-01-12 | 6.38 ppm | 8 | 0 | 5.65 to 7.23 ppm |
| 2004-01-08 | 6.55 ppm | 2 | 0 | 6.55 ppm |
| 2004-01-07 | 6.33 ppm | 9 | 0 | 5.42 to 7.23 ppm |
| 2004-01-06 | 5.99 ppm | 2 | 0 | 5.87 to 6.1 ppm |
| 2004-01-05 | 2.65 ppm | 4 | 0 | 1.58 to 3.84 ppm |
| 2004-01-02 | 5.81 ppm | 10 | 0 | 3.84 to 7.23 ppm |