National Drinking Water Database
Emerald Coast Water Utility Utilities - Pensacola, FL
Serves 307,076 people
Total trihalomethanes (TTHMs)
Total trihalomethanes constitute the sum of four disinfection byproducts: chloroform, bromodichloromethane, dibromochloromethane, and bromoform.Testing Summary
| Contaminant | Average/ Maximum Result | Health Limit Exceeded | Legal Limit Exceeded | Testing History -Tested  -Detected  -Over Health Guidelines  -Over Legal Limit* |
|---|---|---|---|---|
| Total trihalomethanes (TTHMs)Total trihalomethanes constitute the sum of four disinfection byproducts: chloroform, bromodichloromethane, dibromochloromethane, and bromoform. | 0.19 ppb 10.2 ppb | Yes 9.8 ppb | No 80 ppb | |
| 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 Total trihalomethanes (TTHMs)
Health Based Limits for Total trihalomethanes (TTHMs)
| Standard | Description | Level |
|---|---|---|
| One in one million (10-6) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency. | 9.8 ppb |
| 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. Source: U.S. Environmental Protection Agency. | 11.5 ppb |
| 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. | 80 ppb |
| Lifetime health-based limit, non-cancer risk | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency. | 130 ppb |
| One in ten thousand (10-4) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency. | 980 ppb |
| Drinking Water Equivalent Level | A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency. | 1835 ppb |
| 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. | 4860 ppb |
| 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. | 10600 ppb |
Testing Results
| Testing Date | Average Result | Samples taken that day | Number of Non-Detects | Range of Results |
|---|---|---|---|---|
| 2008-12-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-12-29 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-12-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-12-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-12-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-11-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-11-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-11-05 | 0.11 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2008-10-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-10-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-10-15 | 0.16 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2008-10-14 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-10-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-10-01 | 0.09 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2008-09-30 | 2.63 ppb | 1 | 0 | 2.63 ppb |
| 2008-09-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-09-15 | 0.05 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2008-09-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-09-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-09-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-27 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-25 | 0.08 ppb | 4 | 0 | 0 to 0.24 ppb |
| 2008-08-15 | 2.84 ppb | 1 | 0 | 2.84 ppb |
| 2008-08-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-08-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-15 | 3.39 ppb | 1 | 0 | 3.39 ppb |
| 2008-07-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-07-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-06-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-05-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-04-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-04-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-04-15 | 0.57 ppb | 4 | 0 | 0.57 ppb |
| 2008-04-14 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-04-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-04-04 | 0.03 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2008-04-03 | 0.09 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2008-04-02 | 0.05 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2008-04-01 | 0.04 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2008-03-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-03-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-03-21 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2008-03-19 | 0.04 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2008-03-18 | 0.23 ppb | 4 | 0 | 0.23 ppb |
| 2008-03-17 | 0.03 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2008-03-12 | 0.11 ppb | 4 | 0 | 0 to 0.21 ppb |
| 2008-03-11 | 0.1 ppb | 4 | 0 | 0.1 ppb |
| 2008-03-10 | 0.3 ppb | 4 | 0 | 0.3 ppb |
| 2008-03-06 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2008-03-05 | 0.05 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2008-03-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-03-03 | 0.15 ppb | 4 | 0 | 0 to 0.44 ppb |
| 2008-02-21 | 0.16 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2008-02-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-02-19 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2008-02-14 | 0.34 ppb | 4 | 0 | 0.24 to 0.43 ppb |
| 2008-02-12 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2008-02-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-02-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-02-05 | 0.06 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2008-02-04 | 0.09 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2008-02-01 | 0.21 ppb | 4 | 0 | 0.09 to 0.32 ppb |
| 2008-01-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-01-23 | 0.23 ppb | 4 | 0 | 0.09 to 0.36 ppb |
| 2008-01-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2008-01-15 | 0.04 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2008-01-14 | 0.05 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2008-01-11 | 0.21 ppb | 4 | 0 | 0.19 to 0.22 ppb |
| 2008-01-10 | 0.18 ppb | 4 | 0 | 0.09 to 0.27 ppb |
| 2008-01-09 | 0.53 ppb | 4 | 0 | 0.53 ppb |
| 2008-01-08 | 0.24 ppb | 4 | 0 | 0 to 0.51 ppb |
| 2008-01-07 | 0.06 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2008-01-04 | 0.19 ppb | 4 | 0 | 0 to 0.37 ppb |
| 2008-01-03 | 0.07 ppb | 4 | 0 | 0 to 0.25 ppb |
| 2008-01-02 | 0.06 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2007-12-19 | 0.05 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2007-12-18 | 0.08 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2007-12-17 | 0.22 ppb | 4 | 0 | 0.08 to 0.44 ppb |
| 2007-12-11 | 0.2 ppb | 4 | 0 | 0 to 0.42 ppb |
| 2007-12-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-12-05 | 0.16 ppb | 4 | 0 | 0.16 ppb |
| 2007-12-04 | 0.19 ppb | 4 | 0 | 0.13 to 0.3 ppb |
| 2007-12-03 | 0.07 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2007-11-30 | 0.18 ppb | 4 | 0 | 0.18 ppb |
| 2007-11-26 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2007-11-21 | 0.15 ppb | 4 | 0 | 0.15 ppb |
| 2007-11-20 | 0.14 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2007-11-19 | 0.11 ppb | 4 | 0 | 0.09 to 0.13 ppb |
| 2007-11-16 | 0.1 ppb | 4 | 0 | 0 to 0.19 ppb |
| 2007-11-14 | 0.07 ppb | 4 | 0 | 0 to 0.14 ppb |
| 2007-11-13 | 0.48 ppb | 4 | 0 | 0.48 ppb |
| 2007-11-12 | 0.29 ppb | 4 | 0 | 0.29 ppb |
| 2007-11-06 | 0.13 ppb | 4 | 0 | 0 to 0.28 ppb |
| 2007-11-05 | 0.11 ppb | 4 | 0 | 0 to 0.22 ppb |
| 2007-11-02 | 0.13 ppb | 4 | 0 | 0.11 to 0.17 ppb |
| 2007-10-30 | 0.11 ppb | 4 | 0 | 0.11 ppb |
| 2007-10-17 | 0.11 ppb | 4 | 0 | 0.08 to 0.13 ppb |
| 2007-10-15 | 0.08 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2007-10-13 | 0.24 ppb | 4 | 0 | 0.24 ppb |
| 2007-10-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-10-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-10-09 | 0.11 ppb | 4 | 0 | 0.11 ppb |
| 2007-10-08 | 0.08 ppb | 4 | 0 | 0 to 0.24 ppb |
| 2007-10-04 | 0.17 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2007-10-03 | 0.08 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2007-10-02 | 0.21 ppb | 4 | 0 | 0 to 0.45 ppb |
| 2007-10-01 | 0.12 ppb | 4 | 0 | 0.09 to 0.15 ppb |
| 2007-09-19 | 0.07 ppb | 4 | 0 | 0 to 0.28 ppb |
| 2007-09-18 | 0.25 ppb | 4 | 0 | 0.15 to 0.35 ppb |
| 2007-09-17 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2007-09-12 | 4.91 ppb | 1 | 0 | 4.91 ppb |
| 2007-09-11 | 0.22 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2007-09-10 | 0.07 ppb | 4 | 0 | 0 to 0.14 ppb |
| 2007-09-05 | 0.31 ppb | 4 | 0 | 0 to 1.14 ppb |
| 2007-09-04 | 0.16 ppb | 4 | 0 | 0 to 0.35 ppb |
| 2007-08-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-08-14 | 0.24 ppb | 4 | 0 | 0 to 0.48 ppb |
| 2007-08-13 | 0.16 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2007-08-10 | 0.18 ppb | 4 | 0 | 0.13 to 0.23 ppb |
| 2007-08-09 | 4.12 ppb | 1 | 0 | 4.12 ppb |
| 2007-08-07 | 0.89 ppb | 4 | 0 | 0.89 ppb |
| 2007-08-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-08-05 | 0.15 ppb | 4 | 0 | 0.15 ppb |
| 2007-08-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-08-03 | 0.12 ppb | 4 | 0 | 0.1 to 0.13 ppb |
| 2007-08-01 | 0.18 ppb | 4 | 0 | 0.1 to 0.35 ppb |
| 2007-07-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-07-25 | 0.14 ppb | 4 | 0 | 0 to 0.27 ppb |
| 2007-07-24 | 0.26 ppb | 4 | 0 | 0.26 ppb |
| 2007-07-23 | 0.25 ppb | 4 | 0 | 0.25 ppb |
| 2007-07-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-07-19 | 0.22 ppb | 4 | 0 | 0.13 to 0.42 ppb |
| 2007-07-18 | 4.45 ppb | 1 | 0 | 4.45 ppb |
| 2007-07-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-07-16 | 0.13 ppb | 4 | 0 | 0 to 0.35 ppb |
| 2007-07-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-07-10 | 0.12 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2007-07-09 | 0.24 ppb | 4 | 0 | 0 to 0.47 ppb |
| 2007-07-06 | 0.04 ppb | 4 | 0 | 0 to 0.13 ppb |
| 2007-07-05 | 0.19 ppb | 4 | 0 | 0.19 ppb |
| 2007-07-03 | 0.2 ppb | 4 | 0 | 0.09 to 0.38 ppb |
| 2007-07-02 | 0.11 ppb | 4 | 0 | 0.11 ppb |
| 2007-06-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-06-21 | 0.21 ppb | 4 | 0 | 0 to 0.5 ppb |
| 2007-06-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-06-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-06-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-06-11 | 0.14 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2007-06-06 | 0.12 ppb | 4 | 0 | 0 to 0.35 ppb |
| 2007-06-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-06-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-16 | 0.05 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2007-05-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-14 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-07 | 0.22 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2007-05-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-05-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-24 | 0.47 ppb | 4 | 0 | 0.46 to 0.47 ppb |
| 2007-04-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-18 | 0.24 ppb | 4 | 0 | 0 to 0.73 ppb |
| 2007-04-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-10 | 0.11 ppb | 4 | 0 | 0 to 0.45 ppb |
| 2007-04-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-06 | 0.17 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2007-04-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-04-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-22 | 0.17 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2007-03-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-16 | 0.41 ppb | 4 | 0 | 0.4 to 0.41 ppb |
| 2007-03-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-03-02 | 0.16 ppb | 4 | 0 | 0 to 0.32 ppb |
| 2007-02-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-21 | 0.22 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2007-02-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-14 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-02-02 | 0.21 ppb | 4 | 0 | 0 to 0.42 ppb |
| 2007-01-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-18 | 0.38 ppb | 4 | 0 | 0.38 ppb |
| 2007-01-17 | 0.1 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2007-01-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-10 | 0.06 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2007-01-09 | 0.06 ppb | 4 | 0 | 0 to 0.48 ppb |
| 2007-01-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2007-01-03 | 0.11 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2007-01-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-20 | 0.09 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2006-12-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-12 | 0.14 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2006-12-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-12-05 | 0.09 ppb | 4 | 0 | 0 to 0.37 ppb |
| 2006-11-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-11-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-11-14 | 0.04 ppb | 4 | 0 | 0 to 0.3 ppb |
| 2006-11-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-11-09 | 0.23 ppb | 4 | 0 | 0 to 0.46 ppb |
| 2006-11-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-11-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-11-02 | 0.12 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2006-11-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-17 | 0.11 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2006-10-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-10 | 0.21 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2006-10-05 | 0.15 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2006-10-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-10-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-20 | 0.14 ppb | 4 | 0 | 0 to 0.42 ppb |
| 2006-09-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-12 | 0.2 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2006-09-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-09-05 | 0.1 ppb | 4 | 0 | 0 to 0.38 ppb |
| 2006-08-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-14 | 5.1 ppb | 1 | 0 | 5.1 ppb |
| 2006-08-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-10 | 0.04 ppb | 4 | 0 | 0 to 0.44 ppb |
| 2006-08-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-03 | 0.09 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2006-08-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-08-01 | 0.25 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2006-07-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-27 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-26 | 4.16 ppb | 1 | 0 | 4.16 ppb |
| 2006-07-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-24 | 0.21 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2006-07-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-14 | 0.22 ppb | 4 | 0 | 0 to 0.43 ppb |
| 2006-07-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-06 | 0.2 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2006-07-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-07-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-23 | 0.11 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2006-06-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-06-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-19 | 0.49 ppb | 4 | 0 | 0.49 ppb |
| 2006-05-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-15 | 0.09 ppb | 4 | 0 | 0 to 0.37 ppb |
| 2006-05-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-09 | 0.17 ppb | 4 | 0 | 0 to 0.33 ppb |
| 2006-05-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-05-01 | 0.16 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2006-04-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-18 | 0.07 ppb | 4 | 0 | 0 to 0.36 ppb |
| 2006-04-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-12 | 0.13 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2006-04-10 | 0.06 ppb | 4 | 0 | 0 to 0.33 ppb |
| 2006-04-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-06 | 0.11 ppb | 4 | 0 | 0 to 0.42 ppb |
| 2006-04-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-04-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-23 | 0.21 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2006-03-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-13 | 0.2 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2006-03-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-03-09 | 0.05 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2006-03-08 | 0.12 ppb | 4 | 0 | 0 to 0.24 ppb |
| 2006-03-07 | 0.15 ppb | 4 | 0 | 0.15 ppb |
| 2006-03-06 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2006-03-03 | 0.19 ppb | 4 | 0 | 0.19 ppb |
| 2006-03-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-28 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2006-02-27 | 0.16 ppb | 4 | 0 | 0.16 ppb |
| 2006-02-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-22 | 0.06 ppb | 4 | 0 | 0 to 0.17 ppb |
| 2006-02-21 | 0.2 ppb | 4 | 0 | 0.09 to 0.31 ppb |
| 2006-02-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-15 | 0.25 ppb | 4 | 0 | 0.1 to 0.4 ppb |
| 2006-02-14 | 0.38 ppb | 4 | 0 | 0.38 ppb |
| 2006-02-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-09 | 0.16 ppb | 4 | 0 | 0.09 to 0.22 ppb |
| 2006-02-08 | 0.27 ppb | 4 | 0 | 0.09 to 0.44 ppb |
| 2006-02-07 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2006-02-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-02-03 | 0.13 ppb | 4 | 0 | 0.1 to 0.15 ppb |
| 2006-02-02 | 0.1 ppb | 4 | 0 | 0 to 0.29 ppb |
| 2006-02-01 | 0.06 ppb | 4 | 0 | 0 to 0.22 ppb |
| 2006-01-31 | 0.37 ppb | 4 | 0 | 0 to 0.55 ppb |
| 2006-01-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-01-27 | 0.1 ppb | 4 | 0 | 0.1 ppb |
| 2006-01-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-01-17 | 0.07 ppb | 4 | 0 | 0 to 0.22 ppb |
| 2006-01-12 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-01-11 | 0.25 ppb | 4 | 0 | 0.14 to 0.44 ppb |
| 2006-01-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2006-01-09 | 0.05 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2006-01-06 | 0.12 ppb | 4 | 0 | 0 to 0.23 ppb |
| 2006-01-05 | 0.13 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2006-01-04 | 0.14 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2006-01-03 | 0.04 ppb | 4 | 0 | 0 to 0.14 ppb |
| 2005-12-23 | 0.3 ppb | 4 | 0 | 0.16 to 0.44 ppb |
| 2005-12-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-12-21 | 0.05 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2005-12-20 | 0.05 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2005-12-19 | 0.12 ppb | 4 | 0 | 0 to 0.23 ppb |
| 2005-12-15 | 0.29 ppb | 4 | 0 | 0.1 to 0.47 ppb |
| 2005-12-12 | 0.11 ppb | 4 | 0 | 0 to 0.21 ppb |
| 2005-12-08 | 0.27 ppb | 4 | 0 | 0.12 to 0.42 ppb |
| 2005-12-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-12-02 | 0.05 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2005-11-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-11-23 | 0.16 ppb | 4 | 0 | 0.16 ppb |
| 2005-11-22 | 0.23 ppb | 4 | 0 | 0 to 0.55 ppb |
| 2005-11-21 | 0.1 ppb | 4 | 0 | 0.1 ppb |
| 2005-11-18 | 0.16 ppb | 4 | 0 | 0.16 ppb |
| 2005-11-17 | 0.42 ppb | 4 | 0 | 0.42 ppb |
| 2005-11-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-11-14 | 0.1 ppb | 4 | 0 | 0 to 0.19 ppb |
| 2005-11-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-11-09 | 0.19 ppb | 4 | 0 | 0.11 to 0.29 ppb |
| 2005-11-08 | 0.18 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2005-10-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-10-24 | 0.12 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2005-10-21 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2005-10-19 | 0.24 ppb | 4 | 0 | 0.24 ppb |
| 2005-10-17 | 0.13 ppb | 4 | 0 | 0.09 to 0.18 ppb |
| 2005-10-14 | 0.03 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2005-10-13 | 0.18 ppb | 4 | 0 | 0 to 0.47 ppb |
| 2005-10-07 | 0.18 ppb | 4 | 0 | 0 to 0.46 ppb |
| 2005-10-06 | 0.25 ppb | 4 | 0 | 0.11 to 0.39 ppb |
| 2005-10-04 | 0.2 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2005-10-03 | 0.06 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2005-09-21 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2005-09-20 | 0.14 ppb | 4 | 0 | 0 to 0.41 ppb |
| 2005-09-19 | 0.07 ppb | 4 | 0 | 0 to 0.13 ppb |
| 2005-09-14 | 10.2 ppb | 1 | 0 | 10.2 ppb |
| 2005-09-13 | 0.08 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2005-09-07 | 0.28 ppb | 4 | 0 | 0.17 to 0.38 ppb |
| 2005-09-06 | 0.07 ppb | 4 | 0 | 0 to 0.14 ppb |
| 2005-09-02 | 0.1 ppb | 4 | 0 | 0 to 0.32 ppb |
| 2005-09-01 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2005-08-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-08-18 | 0.2 ppb | 4 | 0 | 0.14 to 0.31 ppb |
| 2005-08-17 | 0.13 ppb | 4 | 0 | 0 to 0.44 ppb |
| 2005-08-16 | 0.14 ppb | 4 | 0 | 0.14 ppb |
| 2005-08-12 | 3.89 ppb | 1 | 0 | 3.89 ppb |
| 2005-08-09 | 0.2 ppb | 4 | 0 | 0 to 0.52 ppb |
| 2005-08-08 | 0.18 ppb | 4 | 0 | 0.12 to 0.23 ppb |
| 2005-08-05 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2005-08-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-08-03 | 0.17 ppb | 4 | 0 | 0.17 ppb |
| 2005-08-02 | 0.18 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2005-08-01 | 1.06 ppb | 4 | 0 | 0 to 4.11 ppb |
| 2005-07-29 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-07-28 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2005-07-27 | 0.14 ppb | 4 | 0 | 0.07 to 0.2 ppb |
| 2005-07-26 | 6.6 ppb | 1 | 0 | 6.6 ppb |
| 2005-07-22 | 0.15 ppb | 4 | 0 | 0 to 0.38 ppb |
| 2005-07-21 | 0.11 ppb | 4 | 0 | 0.05 to 0.17 ppb |
| 2005-07-20 | 0.29 ppb | 4 | 0 | 0.29 ppb |
| 2005-07-19 | 0.05 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2005-07-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-07-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-07-14 | 0.14 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2005-07-13 | 0.12 ppb | 4 | 0 | 0 to 0.59 ppb |
| 2005-07-01 | 0.13 ppb | 4 | 0 | 0 to 0.66 ppb |
| 2005-06-21 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2005-06-20 | 0.13 ppb | 4 | 0 | 0 to 0.28 ppb |
| 2005-06-17 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2005-06-15 | 0.24 ppb | 4 | 0 | 0.09 to 0.45 ppb |
| 2005-06-14 | 0.16 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2005-06-08 | 0.06 ppb | 4 | 0 | 0 to 0.17 ppb |
| 2005-06-07 | 0.14 ppb | 4 | 0 | 0.13 to 0.14 ppb |
| 2005-06-06 | 0.24 ppb | 4 | 0 | 0 to 0.47 ppb |
| 2005-06-03 | 0.36 ppb | 4 | 0 | 0.36 ppb |
| 2005-06-02 | 0.06 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2005-06-01 | 0.13 ppb | 4 | 0 | 0.12 to 0.14 ppb |
| 2005-05-25 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2005-05-19 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2005-05-18 | 0.3 ppb | 4 | 0 | 0.3 ppb |
| 2005-05-17 | 0.14 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2005-05-12 | 0.1 ppb | 4 | 0 | 0 to 0.19 ppb |
| 2005-05-11 | 0.16 ppb | 4 | 0 | 0.16 ppb |
| 2005-05-10 | 0.13 ppb | 4 | 0 | 0.13 ppb |
| 2005-05-09 | 0.22 ppb | 4 | 0 | 0 to 0.44 ppb |
| 2005-05-04 | 0.11 ppb | 4 | 0 | 0.09 to 0.12 ppb |
| 2005-05-03 | 0.24 ppb | 4 | 0 | 0 to 0.57 ppb |
| 2005-05-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-04-27 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2005-04-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-04-21 | 0.47 ppb | 4 | 0 | 0 to 1.57 ppb |
| 2005-04-20 | 0.37 ppb | 4 | 0 | 0.11 to 0.63 ppb |
| 2005-04-19 | 0.05 ppb | 4 | 0 | 0 to 0.09 ppb |
| 2005-04-18 | 0.22 ppb | 4 | 0 | 0 to 0.3 ppb |
| 2005-04-15 | 0.22 ppb | 4 | 0 | 0.22 ppb |
| 2005-04-14 | 0.13 ppb | 4 | 0 | 0 to 0.25 ppb |
| 2005-04-12 | 0.11 ppb | 4 | 0 | 0.11 ppb |
| 2005-04-11 | 0.19 ppb | 4 | 0 | 0 to 0.46 ppb |
| 2005-04-08 | 0.14 ppb | 4 | 0 | 0 to 0.25 ppb |
| 2005-04-07 | 0.09 ppb | 4 | 0 | 0 to 0.45 ppb |
| 2005-04-05 | 0.2 ppb | 4 | 0 | 0.13 to 0.26 ppb |
| 2005-04-04 | 0.05 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2005-03-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-03-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-03-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-03-14 | 0.19 ppb | 4 | 0 | 0 to 0.6 ppb |
| 2005-03-11 | 0.16 ppb | 4 | 0 | 0.12 to 0.2 ppb |
| 2005-03-10 | 0.17 ppb | 4 | 0 | 0 to 0.49 ppb |
| 2005-03-07 | 0.28 ppb | 4 | 0 | 0.28 ppb |
| 2005-03-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-03-03 | 0.35 ppb | 4 | 0 | 0.35 ppb |
| 2005-03-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-03-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-24 | 0.12 ppb | 4 | 0 | 0.12 ppb |
| 2005-02-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-14 | 0.1 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2005-02-10 | 0.06 ppb | 4 | 0 | 0 to 0.22 ppb |
| 2005-02-09 | 0.23 ppb | 4 | 0 | 0.23 ppb |
| 2005-02-08 | 0.09 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2005-02-07 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2005-02-04 | 0.19 ppb | 4 | 0 | 0.13 to 0.25 ppb |
| 2005-02-03 | 0.1 ppb | 4 | 0 | 0 to 0.4 ppb |
| 2005-02-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-02-01 | 0.11 ppb | 4 | 0 | 0 to 0.33 ppb |
| 2005-01-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-27 | 0.36 ppb | 4 | 0 | 0.36 ppb |
| 2005-01-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-21 | 0.08 ppb | 4 | 0 | 0 to 0.25 ppb |
| 2005-01-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-13 | 0.03 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2005-01-12 | 0.23 ppb | 4 | 0 | 0 to 0.51 ppb |
| 2005-01-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2005-01-04 | 0.16 ppb | 4 | 0 | 0 to 0.32 ppb |
| 2004-12-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-12-23 | 0.07 ppb | 4 | 0 | 0 to 0.2 ppb |
| 2004-12-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-12-21 | 0.13 ppb | 4 | 0 | 0 to 0.55 ppb |
| 2004-12-13 | 0.19 ppb | 4 | 0 | 0 to 0.45 ppb |
| 2004-12-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-12-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-12-07 | 0.33 ppb | 4 | 0 | 0.33 ppb |
| 2004-12-03 | 0.02 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2004-12-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-16 | 5.75 ppb | 1 | 0 | 5.75 ppb |
| 2004-11-15 | 0.34 ppb | 4 | 0 | 0.34 ppb |
| 2004-11-12 | 0.08 ppb | 4 | 0 | 0 to 0.16 ppb |
| 2004-11-11 | 0.26 ppb | 4 | 0 | 0 to 0.53 ppb |
| 2004-11-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-11-03 | 0.25 ppb | 4 | 0 | 0.25 ppb |
| 2004-11-02 | 0.05 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2004-10-29 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-10-28 | 0.05 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2004-10-27 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-10-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-10-25 | 0.08 ppb | 4 | 0 | 0 to 0.24 ppb |
| 2004-10-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-10-08 | 0.11 ppb | 4 | 0 | 0 to 0.22 ppb |
| 2004-10-07 | 0.8 ppb | 4 | 0 | 0 to 2.44 ppb |
| 2004-10-06 | 0.01 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2004-10-05 | 0.07 ppb | 4 | 0 | 0 to 0.39 ppb |
| 2004-10-04 | 0.02 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2004-09-10 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-09-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-09-07 | 0.14 ppb | 4 | 0 | 0 to 0.26 ppb |
| 2004-09-02 | 0.06 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2004-08-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-08-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-08-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-08-17 | 0.4 ppb | 4 | 0 | 0 to 1.49 ppb |
| 2004-08-16 | 0.09 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2004-08-13 | 4.12 ppb | 1 | 0 | 4.12 ppb |
| 2004-08-12 | 0.17 ppb | 4 | 0 | 0.16 to 0.18 ppb |
| 2004-08-11 | 0.08 ppb | 4 | 0 | 0 to 0.16 ppb |
| 2004-08-10 | 0.39 ppb | 4 | 0 | 0.39 ppb |
| 2004-08-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-08-05 | 0.08 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2004-08-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-07-29 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-07-28 | 0.09 ppb | 4 | 0 | 0 to 0.17 ppb |
| 2004-07-22 | 0.04 ppb | 4 | 0 | 0 to 0.15 ppb |
| 2004-07-21 | 0.17 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2004-07-19 | 0.03 ppb | 4 | 0 | 0 to 0.1 ppb |
| 2004-07-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-07-12 | 3.17 ppb | 1 | 0 | 3.17 ppb |
| 2004-07-09 | 0.13 ppb | 4 | 0 | 0 to 0.23 ppb |
| 2004-07-08 | 0.15 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2004-07-07 | 0.16 ppb | 4 | 0 | 0 to 0.44 ppb |
| 2004-07-02 | 0.07 ppb | 4 | 0 | 0 to 0.23 ppb |
| 2004-07-01 | 0.09 ppb | 4 | 0 | 0 to 0.18 ppb |
| 2004-06-30 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-06-28 | 0.17 ppb | 4 | 0 | 0.17 ppb |
| 2004-06-24 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-06-18 | 0.09 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2004-06-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-06-15 | 4.53 ppb | 1 | 0 | 4.53 ppb |
| 2004-06-10 | 0.15 ppb | 4 | 0 | 0.1 to 0.2 ppb |
| 2004-06-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-06-07 | 0.38 ppb | 4 | 0 | 0.38 ppb |
| 2004-06-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-06-03 | 0.11 ppb | 4 | 0 | 0 to 0.3 ppb |
| 2004-06-02 | 0.03 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2004-05-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-05-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-05-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-05-17 | 0.06 ppb | 4 | 0 | 0 to 0.28 ppb |
| 2004-05-11 | 0.18 ppb | 4 | 0 | 0 to 0.34 ppb |
| 2004-05-10 | 3 ppb | 1 | 0 | 3 ppb |
| 2004-05-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-05-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-05-05 | 0.09 ppb | 4 | 0 | 0 to 0.28 ppb |
| 2004-05-04 | 0.04 ppb | 4 | 0 | 0 to 0.11 ppb |
| 2004-05-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-29 | 0.08 ppb | 4 | 0 | 0 to 0.16 ppb |
| 2004-04-23 | 0.03 ppb | 4 | 0 | 0 to 0.17 ppb |
| 2004-04-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-21 | 0.04 ppb | 4 | 0 | 0 to 0.25 ppb |
| 2004-04-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-14 | 0.06 ppb | 4 | 0 | 0 to 0.12 ppb |
| 2004-04-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-08 | 0.06 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2004-04-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-04-02 | 0.11 ppb | 4 | 0 | 0.11 ppb |
| 2004-04-01 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-31 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-29 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-27 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-19 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-18 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-17 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-04 | 0.13 ppb | 4 | 0 | 0 to 0.38 ppb |
| 2004-03-03 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-02 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-03-01 | 0.16 ppb | 4 | 0 | 0 to 0.31 ppb |
| 2004-02-27 | 1.55 ppb | 4 | 0 | 1.55 ppb |
| 2004-02-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-25 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-20 | 0.08 ppb | 4 | 0 | 0 to 0.24 ppb |
| 2004-02-18 | 0 ppb | 1 | 1 | 0 ppb |
| 2004-02-13 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-11 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-10 | 0.15 ppb | 4 | 0 | 0 to 0.29 ppb |
| 2004-02-05 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-04 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-02-03 | 0.24 ppb | 4 | 0 | 0.21 to 0.27 ppb |
| 2004-01-28 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-27 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-26 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-23 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-22 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-21 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-20 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-16 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-15 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-14 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-09 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-08 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-07 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-06 | 0 ppb | 4 | 0 | 0 ppb |
| 2004-01-05 | 0 ppb | 4 | 0 | 0 ppb |