Nitrate
Chino Basin Desalter Authority - Desalter 1
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.
916
Samples
0
Samples exceeding legal limit (MCL)
897
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 2.46 ppm | 155 | 153 | ND - 6.14 ppm |
| 2015 | 3.06 ppm | 159 | 159 | 0.200 ppm - 4.80 ppm |
| 2016 | 3.14 ppm | 156 | 156 | 0.1000 ppm - 5.90 ppm |
| 2017 | 3.10 ppm | 155 | 153 | ND - 5.40 ppm |
| 2018 | 3.60 ppm | 135 | 135 | 0.200 ppm - 5.40 ppm |
| 2019 | 3.92 ppm | 156 | 148 | ND - 8.50 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.
EPA Maximum Contaminant
Level (MCL) 10 ppm
The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-14 | 1808-018-1025 | 0.181 ppm |
| 2014-01-14 | 1808-019-1015 | 2.62 ppm |
| 2014-01-14 | 1808-020-1123 | 3.43 ppm |
| 2014-01-21 | 1808-018-1020 | 0.248 ppm |
| 2014-01-21 | 1808-019-0655 | 2.62 ppm |
| 2014-01-21 | 1808-020-1025 | 3.57 ppm |
| 2014-01-23 | 1808-018-0635 | 0.294 ppm |
| 2014-01-23 | 1808-019-0630 | 2.67 ppm |
| 2014-01-23 | 1808-020-0703 | 3.59 ppm |
| 2014-01-28 | 1808-018-0728 | 0.700 ppm |
| 2014-01-28 | 1808-019-0705 | 2.69 ppm |
| 2014-01-28 | 1808-020-0735 | 3.39 ppm |
| 2014-02-04 | 1808-018-0840 | 0.226 ppm |
| 2014-02-04 | 1808-019-0832 | 2.85 ppm |
| 2014-02-04 | 1808-020-0822 | 3.43 ppm |
| 2014-02-11 | 1808-018-0820 | ND |
| 2014-02-11 | 1808-019-0825 | 2.98 ppm |
| 2014-02-11 | 1808-020-0837 | 3.68 ppm |
| 2014-02-18 | 1808-018-0658 | 0.497 ppm |
| 2014-02-18 | 1808-019-0652 | 2.89 ppm |
| 2014-02-18 | 1808-020-0650 | 3.39 ppm |
| 2014-02-25 | 1808-018-0723 | 0.474 ppm |
| 2014-02-25 | 1808-019-0719 | 2.89 ppm |
| 2014-02-25 | 1808-020-0739 | 4.90 ppm |
| 2014-03-04 | 1808-018-1235 | 0.836 ppm |
| 2014-03-04 | 1808-019-1234 | 3.41 ppm |
| 2014-03-04 | 1808-020-1245 | 3.98 ppm |
| 2014-03-11 | 1808-018-0707 | 0.745 ppm |
| 2014-03-11 | 1808-019-0656 | 3.09 ppm |
| 2014-03-11 | 1808-020-0615 | 3.70 ppm |
| 2014-03-18 | 1808-018-0715 | 0.610 ppm |
| 2014-03-18 | 1808-019-0709 | 3.12 ppm |
| 2014-03-18 | 1808-020-0650 | 3.59 ppm |
| 2014-03-25 | 1808-018-0735 | 1.17 ppm |
| 2014-03-25 | 1808-019-0655 | 3.21 ppm |
| 2014-03-25 | 1808-020-0645 | 3.95 ppm |
| 2014-04-01 | 1808-018-0605 | 0.813 ppm |
| 2014-04-01 | 1808-019-0645 | 3.34 ppm |
| 2014-04-01 | 1808-020-0632 | 3.82 ppm |
| 2014-04-08 | 1808-018-0650 | 2.35 ppm |
| 2014-04-08 | 1808-019-0656 | 3.43 ppm |
| 2014-04-08 | 1808-020-0700 | 3.68 ppm |
| 2014-04-15 | 1808-018-0652 | 0.565 ppm |
| 2014-04-15 | 1808-019-0658 | 3.43 ppm |
| 2014-04-15 | 1808-020-0650 | 3.77 ppm |
| 2014-04-22 | 1808-018-0758 | 0.226 ppm |
| 2014-04-22 | 1808-019-0650 | 3.39 ppm |
| 2014-04-22 | 1808-020-0741 | 5.87 ppm |
| 2014-04-29 | 1808-018-0645 | 0.361 ppm |
| 2014-04-29 | 1808-019-0710 | 3.00 ppm |
| 2014-04-29 | 1808-020-0722 | 5.62 ppm |
| 2014-05-06 | 1808-018-0845 | 0.407 ppm |
| 2014-05-06 | 1808-019-0900 | 3.03 ppm |
| 2014-05-06 | 1808-020-0830 | 6.14 ppm |
| 2014-05-13 | 1808-018-0655 | 0.678 ppm |
| 2014-05-13 | 1808-019-0645 | 3.07 ppm |
| 2014-05-13 | 1808-020-0820 | 6.03 ppm |
| 2014-05-20 | 1808-018-0722 | 0.361 ppm |
| 2014-05-20 | 1808-019-0715 | 3.05 ppm |
| 2014-05-20 | 1808-020-0732 | 3.75 ppm |
| 2014-05-27 | 1808-018-0727 | 0.203 ppm |
| 2014-05-27 | 1808-019-0715 | 3.03 ppm |
| 2014-05-27 | 1808-020-0748 | 3.19 ppm |
| 2014-06-03 | 1808-018-0705 | 0.384 ppm |
| 2014-06-03 | 1808-019-0710 | 3.03 ppm |
| 2014-06-03 | 1808-020-0718 | 2.96 ppm |
| 2014-06-10 | 1808-018-0720 | 0.248 ppm |
| 2014-06-10 | 1808-019-0643 | 2.98 ppm |
| 2014-06-10 | 1808-020-0650 | 3.09 ppm |
| 2014-06-17 | 1808-018-0715 | 0.384 ppm |
| 2014-06-17 | 1808-019-0700 | 3.12 ppm |
| 2014-06-17 | 1808-020-0833 | 4.04 ppm |
| 2014-06-24 | 1808-018-0610 | 0.361 ppm |
| 2014-06-24 | 1808-019-0615 | 2.91 ppm |
| 2014-06-24 | 1808-020-0640 | 3.61 ppm |
| 2014-07-01 | 1808-018-0825 | 0.339 ppm |
| 2014-07-01 | 1808-019-0652 | 2.89 ppm |
| 2014-07-01 | 1808-020-0650 | 3.48 ppm |
| 2014-07-08 | 1808-018-0628 | 1.15 ppm |
| 2014-07-08 | 1808-019-0652 | 2.82 ppm |
| 2014-07-08 | 1808-020-0654 | 3.52 ppm |
| 2014-07-15 | 1808-018-0745 | 0.203 ppm |
| 2014-07-15 | 1808-019-0820 | 2.80 ppm |
| 2014-07-15 | 1808-020-0755 | 3.57 ppm |
| 2014-07-22 | 1808-018-0645 | 0.203 ppm |
| 2014-07-22 | 1808-019-0635 | 2.82 ppm |
| 2014-07-23 | 4790-020-0904 | 3.39 ppm |
| 2014-07-29 | 1808-018-0640 | 0.791 ppm |
| 2014-07-29 | 1808-019-0635 | 2.80 ppm |
| 2014-07-29 | 1808-020-0620 | 3.30 ppm |
| 2014-08-05 | 1808-018-0645 | 0.248 ppm |
| 2014-08-05 | 1808-019-0625 | 2.85 ppm |
| 2014-08-05 | 1808-020-0655 | 3.48 ppm |
| 2014-08-12 | 1808-018-0842 | 0.542 ppm |
| 2014-08-12 | 1808-019-0830 | 3.34 ppm |
| 2014-08-12 | 1808-020-0850 | 3.34 ppm |
| 2014-08-19 | 1808-018-0646 | 0.271 ppm |
| 2014-08-19 | 1808-019-0651 | 2.71 ppm |
| 2014-08-19 | 1808-020-0637 | 3.41 ppm |
| 2014-08-26 | 1808-018-0842 | 0.700 ppm |
| 2014-08-26 | 1808-019-0849 | 2.80 ppm |
| 2014-08-26 | 1808-020-0825 | 3.50 ppm |
| 2014-09-02 | 1808-018-1014 | 0.791 ppm |
| 2014-09-02 | 1808-019-0954 | 2.78 ppm |
| 2014-09-02 | 1808-020-0950 | 3.39 ppm |
| 2014-09-09 | 1808-018-0634 | 0.429 ppm |
| 2014-09-09 | 1808-019-0639 | 2.80 ppm |
| 2014-09-09 | 1808-020-0720 | 2.98 ppm |
| 2014-09-16 | 1808-018-0745 | 1.02 ppm |
| 2014-09-16 | 1808-019-0710 | 2.76 ppm |
| 2014-09-16 | 1808-020-0721 | 3.93 ppm |
| 2014-09-23 | 1808-019-0656 | 2.87 ppm |
| 2014-09-23 | 1808-020-0727 | 3.66 ppm |
| 2014-09-30 | 1808-018-0730 | 0.678 ppm |
| 2014-09-30 | 1808-019-0710 | 2.85 ppm |
| 2014-09-30 | 1808-020-0650 | 3.48 ppm |
| 2014-10-07 | 1808-018-0658 | 0.226 ppm |
| 2014-10-07 | 1808-019-0702 | 2.87 ppm |
| 2014-10-07 | 1808-020-0633 | 3.43 ppm |
| 2014-10-14 | 1808-018-0940 | 0.316 ppm |
| 2014-10-14 | 1808-019-0932 | 2.96 ppm |
| 2014-10-14 | 1808-020-0920 | 3.64 ppm |
| 2014-10-21 | 1808-018-0607 | 1.36 ppm |
| 2014-10-21 | 1808-019-0625 | 2.94 ppm |
| 2014-10-21 | 1808-020-0646 | 5.81 ppm |
| 2014-10-28 | 1808-018-0630 | 0.429 ppm |
| 2014-10-28 | 1808-019-0710 | 2.94 ppm |
| 2014-10-28 | 1808-020-0657 | 3.66 ppm |
| 2014-11-04 | 1808-018-0733 | 0.226 ppm |
| 2014-11-04 | 1808-019-0720 | 2.89 ppm |
| 2014-11-04 | 1808-020-0625 | 3.64 ppm |
| 2014-11-11 | 1808-018-0727 | 0.113 ppm |
| 2014-11-11 | 1808-019-0710 | 2.82 ppm |
| 2014-11-11 | 1808-020-0700 | 3.73 ppm |
| 2014-11-18 | 1808-018-1050 | 0.316 ppm |
| 2014-11-18 | 1808-019-1015 | 2.76 ppm |
| 2014-11-18 | 1808-020-1055 | 3.86 ppm |
| 2014-11-25 | 1808-018-1100 | ND |
| 2014-11-25 | 1808-019-1053 | 3.00 ppm |
| 2014-11-25 | 1808-020-1113 | 3.48 ppm |
| 2014-12-02 | 1808-018-0615 | 0.316 ppm |
| 2014-12-02 | 1808-019-0910 | 2.82 ppm |
| 2014-12-02 | 1808-020-0840 | 3.68 ppm |
| 2014-12-09 | 1808-018-1105 | 3.91 ppm |
| 2014-12-09 | 1808-019-1110 | 3.03 ppm |
| 2014-12-09 | 1808-020-1055 | 4.92 ppm |
| 2014-12-16 | 1808-018-0835 | 0.271 ppm |
| 2014-12-16 | 1808-019-0839 | 2.44 ppm |
| 2014-12-16 | 1808-020-1118 | 3.68 ppm |
| 2014-12-23 | 1808-018-0550 | 0.587 ppm |
| 2014-12-23 | 1808-019-0540 | 2.73 ppm |
| 2014-12-23 | 1808-020-0600 | 3.43 ppm |
| 2014-12-30 | 1808-018-0615 | 0.181 ppm |
| 2014-12-30 | 1808-019-0645 | 2.96 ppm |
| 2014-12-30 | 1808-020-0650 | 3.89 ppm |
| 2015-01-06 | 1808-018-0545 | 0.474 ppm |
| 2015-01-06 | 1808-019-0550 | 2.91 ppm |
| 2015-01-06 | 1808-020-0540 | 3.84 ppm |
| 2015-01-12 | 1808-018-0640 | 0.294 ppm |
| 2015-01-12 | 1808-019-0705 | 2.94 ppm |
| 2015-01-12 | 1808-020-0936 | 3.73 ppm |
| 2015-01-20 | 1808-018-0630 | 0.858 ppm |
| 2015-01-20 | 1808-019-0605 | 3.16 ppm |
| 2015-01-20 | 1808-020-0651 | 3.98 ppm |
| 2015-01-27 | 1808-018-0627 | 1.15 ppm |
| 2015-01-27 | 1808-019-0635 | 3.07 ppm |
| 2015-01-27 | 1808-020-0941 | 3.89 ppm |
| 2015-02-03 | 1808-018-0633 | 0.678 ppm |
| 2015-02-03 | 1808-019-0615 | 3.52 ppm |
| 2015-02-03 | 1808-020-0640 | 4.27 ppm |
| 2015-02-10 | 1808-018-0720 | 1.81 ppm |
| 2015-02-10 | 1808-019-0800 | 3.41 ppm |
| 2015-02-10 | 1808-020-0744 | 4.36 ppm |
| 2015-02-17 | 1808-019-0635 | 3.50 ppm |
| 2015-02-17 | 1808-020-0825 | 4.25 ppm |
| 2015-02-18 | 1808-018-1200 | 1.08 ppm |
| 2015-02-24 | 1808-018-0647 | 0.520 ppm |
| 2015-02-24 | 1808-019-0720 | 3.84 ppm |
| 2015-02-24 | 1808-020-0630 | 4.36 ppm |
| 2015-03-03 | 1808-018-0705 | 2.71 ppm |
| 2015-03-03 | 1808-019-0800 | 4.13 ppm |
| 2015-03-03 | 1808-020-0746 | 4.79 ppm |
| 2015-03-10 | 1808-018-0750 | 0.745 ppm |
| 2015-03-10 | 1808-019-0745 | 3.86 ppm |
| 2015-03-10 | 1808-020-0713 | 4.52 ppm |
| 2015-03-17 | 1808-018-0736 | 1.56 ppm |
| 2015-03-17 | 1808-019-0732 | 3.98 ppm |
| 2015-03-17 | 1808-020-0721 | 4.50 ppm |
| 2015-03-24 | 1808-018-0830 | 0.700 ppm |
| 2015-03-24 | 1808-019-0817 | 3.91 ppm |
| 2015-03-24 | 1808-020-0717 | 4.47 ppm |
| 2015-03-31 | 1808-018-0810 | 0.497 ppm |
| 2015-03-31 | 1808-019-0740 | 3.59 ppm |
| 2015-03-31 | 1808-020-0755 | 4.18 ppm |
| 2015-04-07 | 1808-018-0829 | 0.723 ppm |
| 2015-04-07 | 1808-019-0755 | 3.61 ppm |
| 2015-04-07 | 1808-020-0820 | 4.34 ppm |
| 2015-04-14 | 1808-018-0859 | 0.904 ppm |
| 2015-04-14 | 1808-019-0755 | 3.70 ppm |
| 2015-04-14 | 1808-020-0830 | 4.11 ppm |
| 2015-04-21 | 1808-018-0750 | 0.994 ppm |
| 2015-04-21 | 1808-019-0815 | 3.82 ppm |
| 2015-04-21 | 1808-020-0800 | 4.25 ppm |
| 2015-04-28 | 1808-018-0825 | 0.203 ppm |
| 2015-04-28 | 1808-019-0806 | 3.70 ppm |
| 2015-04-28 | 1808-020-0752 | 4.13 ppm |
| 2015-05-05 | 1808-018-0820 | 1.60 ppm |
| 2015-05-05 | 1808-019-0805 | 3.75 ppm |
| 2015-05-05 | 1808-020-0835 | 4.27 ppm |
| 2015-05-12 | 1808-018-0730 | 0.361 ppm |
| 2015-05-12 | 1808-019-0845 | 3.77 ppm |
| 2015-05-12 | 1808-020-0830 | 4.07 ppm |
| 2015-05-19 | 1808-018-0745 | 0.655 ppm |
| 2015-05-19 | 4790-018-0745 | 0.587 ppm |
| 2015-05-19 | 1808-019-0738 | 3.75 ppm |
| 2015-05-19 | 4790-019-0738 | 3.39 ppm |
| 2015-05-19 | 1808-020-0708 | 4.16 ppm |
| 2015-05-19 | 4790-020-0709 | 3.84 ppm |
| 2015-05-26 | 4790-018-0732 | 0.926 ppm |
| 2015-05-26 | 4790-019-0725 | 3.39 ppm |
| 2015-05-26 | 4790-020-0653 | 3.61 ppm |
| 2015-06-02 | 1808-018-0659 | 2.03 ppm |
| 2015-06-02 | 1808-019-0625 | 3.80 ppm |
| 2015-06-02 | 1808-020-0733 | 4.20 ppm |
| 2015-06-09 | 1808-018-0745 | 0.429 ppm |
| 2015-06-09 | 1808-019-0720 | 3.84 ppm |
| 2015-06-09 | 1808-020-0700 | 4.41 ppm |
| 2015-06-16 | 1808-018-0730 | 1.08 ppm |
| 2015-06-16 | 1808-019-0700 | 3.82 ppm |
| 2015-06-16 | 1808-020-0711 | 4.38 ppm |
| 2015-06-23 | 1808-018-0625 | 0.994 ppm |
| 2015-06-23 | 1808-019-0615 | 3.95 ppm |
| 2015-06-23 | 1808-020-0700 | 4.36 ppm |
| 2015-06-30 | 1808-018-0633 | 1.04 ppm |
| 2015-06-30 | 1808-019-0615 | 3.84 ppm |
| 2015-06-30 | 1808-020-0643 | 4.34 ppm |
| 2015-07-07 | 1808-018-0655 | 1.49 ppm |
| 2015-07-07 | 1808-019-0642 | 3.84 ppm |
| 2015-07-07 | 1808-020-0720 | 4.47 ppm |
| 2015-07-14 | 1808-018-0725 | 1.58 ppm |
| 2015-07-14 | 1808-019-0735 | 3.89 ppm |
| 2015-07-14 | 1808-020-0630 | 4.41 ppm |
| 2015-07-15 | 4790-020-0730 | 4.07 ppm |
| 2015-07-21 | 1808-018-0625 | 0.361 ppm |
| 2015-07-21 | 1808-019-0615 | 4.02 ppm |
| 2015-07-21 | 1808-020-0700 | 4.47 ppm |
| 2015-07-28 | 1808-018-0630 | 1.69 ppm |
| 2015-07-28 | 1808-019-0610 | 4.02 ppm |
| 2015-07-28 | 1808-020-0720 | 4.59 ppm |
| 2015-08-04 | 1808-018-0627 | 1.70 ppm |
| 2015-08-04 | 1808-019-0610 | 3.90 ppm |
| 2015-08-04 | 1808-020-0750 | 4.40 ppm |
| 2015-08-11 | 1808-018-0820 | 2.00 ppm |
| 2015-08-11 | 1808-019-0830 | 4.20 ppm |
| 2015-08-11 | 1808-020-0755 | 4.70 ppm |
| 2015-08-18 | 1808-018-0640 | 0.600 ppm |
| 2015-08-18 | 1808-019-0652 | 4.20 ppm |
| 2015-08-18 | 1808-020-0830 | 4.60 ppm |
| 2015-08-25 | 1808-018-0633 | 1.50 ppm |
| 2015-08-25 | 1808-019-0622 | 4.30 ppm |
| 2015-08-25 | 1808-020-0840 | 4.80 ppm |
| 2015-09-01 | 1808-018-0640 | 1.90 ppm |
| 2015-09-01 | 1808-019-0620 | 4.30 ppm |
| 2015-09-01 | 1808-020-0727 | 4.80 ppm |
| 2015-09-08 | 1808-018-0800 | 2.00 ppm |
| 2015-09-08 | 1808-019-0755 | 4.20 ppm |
| 2015-09-08 | 1808-020-0715 | 4.80 ppm |
| 2015-09-15 | 1808-018-0745 | 0.300 ppm |
| 2015-09-15 | 1808-019-0722 | 4.20 ppm |
| 2015-09-15 | 1808-020-0725 | 4.20 ppm |
| 2015-09-22 | 1808-018-0640 | 0.200 ppm |
| 2015-09-22 | 1808-019-0615 | 4.30 ppm |
| 2015-09-22 | 1808-020-0650 | 3.90 ppm |
| 2015-09-29 | 1808-019-0750 | 4.00 ppm |
| 2015-09-29 | 1808-020-0810 | 3.90 ppm |
| 2015-10-06 | 1808-018-0805 | 2.00 ppm |
| 2015-10-06 | 1808-019-0655 | 4.20 ppm |
| 2015-10-06 | 1808-020-0810 | 4.20 ppm |
| 2015-10-13 | 1808-018-0700 | 2.10 ppm |
| 2015-10-13 | 1808-019-0635 | 4.20 ppm |
| 2015-10-13 | 1808-020-0705 | 4.00 ppm |
| 2015-10-20 | 1808-018-0633 | 0.300 ppm |
| 2015-10-20 | 1808-019-0650 | 4.40 ppm |
| 2015-10-20 | 1808-020-0639 | 4.60 ppm |
| 2015-10-27 | 1808-018-0640 | 0.400 ppm |
| 2015-10-27 | 1808-019-0630 | 4.20 ppm |
| 2015-10-27 | 1808-020-0654 | 4.00 ppm |
| 2015-11-03 | 1808-018-0540 | 1.10 ppm |
| 2015-11-03 | 1808-019-0555 | 4.20 ppm |
| 2015-11-03 | 1808-020-0607 | 4.00 ppm |
| 2015-11-10 | 1808-018-0755 | 0.300 ppm |
| 2015-11-10 | 1808-019-0815 | 4.20 ppm |
| 2015-11-10 | 1808-020-0820 | 3.90 ppm |
| 2015-11-17 | 1808-018-0730 | 0.400 ppm |
| 2015-11-17 | 1808-019-0650 | 4.20 ppm |
| 2015-11-17 | 1808-020-0700 | 4.00 ppm |
| 2015-11-24 | 1808-018-0800 | 1.40 ppm |
| 2015-11-24 | 1808-019-0702 | 4.20 ppm |
| 2015-11-24 | 1808-020-0711 | 4.10 ppm |
| 2015-12-01 | 1808-018-0703 | 0.400 ppm |
| 2015-12-01 | 1808-019-0625 | 4.20 ppm |
| 2015-12-01 | 1808-020-0635 | 4.10 ppm |
| 2015-12-08 | 1808-018-0750 | 0.200 ppm |
| 2015-12-08 | 1808-019-0725 | 4.20 ppm |
| 2015-12-08 | 1808-020-0730 | 3.50 ppm |
| 2015-12-15 | 1808-018-0755 | 0.200 ppm |
| 2015-12-15 | 1808-019-0725 | 4.30 ppm |
| 2015-12-15 | 1808-020-0735 | 4.10 ppm |
| 2015-12-22 | 1808-018-0705 | 0.900 ppm |
| 2015-12-22 | 1808-019-0650 | 4.30 ppm |
| 2015-12-22 | 1808-020-0656 | 4.00 ppm |
| 2015-12-29 | 1808-018-0650 | 0.700 ppm |
| 2015-12-29 | 1808-019-0630 | 4.30 ppm |
| 2015-12-29 | 1808-020-0655 | 4.00 ppm |
| 2016-01-05 | 1808-018-0705 | 0.200 ppm |
| 2016-01-05 | 1808-019-0643 | 4.30 ppm |
| 2016-01-05 | 1808-020-0648 | 4.00 ppm |
| 2016-01-12 | 1808-018-0705 | 0.300 ppm |
| 2016-01-12 | 1808-019-0648 | 4.30 ppm |
| 2016-01-12 | 1808-020-0656 | 4.10 ppm |
| 2016-01-22 | 1808-018-0918 | 0.500 ppm |
| 2016-01-22 | 1808-019-0855 | 4.40 ppm |
| 2016-01-22 | 1808-020-0910 | 4.60 ppm |
| 2016-01-26 | 1808-018-0725 | 1.10 ppm |
| 2016-01-26 | 1808-019-0645 | 4.40 ppm |
| 2016-01-26 | 1808-020-0715 | 4.10 ppm |
| 2016-02-02 | 1808-018-0725 | 0.600 ppm |
| 2016-02-02 | 1808-019-0620 | 4.50 ppm |
| 2016-02-02 | 1808-020-0717 | 4.60 ppm |
| 2016-02-09 | 1808-018-0742 | 1.70 ppm |
| 2016-02-09 | 1808-019-0715 | 5.90 ppm |
| 2016-02-09 | 1808-020-0730 | 4.20 ppm |
| 2016-02-16 | 1808-018-0722 | 0.300 ppm |
| 2016-02-16 | 1808-019-0710 | 4.40 ppm |
| 2016-02-16 | 1808-020-0716 | 4.10 ppm |
| 2016-02-23 | 1808-018-0700 | 0.400 ppm |
| 2016-02-23 | 1808-019-0635 | 4.50 ppm |
| 2016-02-23 | 1808-020-0745 | 4.40 ppm |
| 2016-03-01 | 1808-018-0740 | 1.000 ppm |
| 2016-03-01 | 1808-019-0716 | 4.50 ppm |
| 2016-03-01 | 1808-020-0724 | 4.00 ppm |
| 2016-03-08 | 1808-018-0637 | 2.40 ppm |
| 2016-03-08 | 1808-019-0630 | 4.40 ppm |
| 2016-03-15 | 1808-018-0715 | 0.500 ppm |
| 2016-03-15 | 1808-019-0655 | 4.00 ppm |
| 2016-03-15 | 1808-020-0700 | 4.20 ppm |
| 2016-03-21 | 1808-018-0700 | 0.400 ppm |
| 2016-03-21 | 1808-019-0645 | 4.40 ppm |
| 2016-03-21 | 1808-020-0648 | 4.00 ppm |
| 2016-03-29 | 1808-018-0645 | 0.600 ppm |
| 2016-03-29 | 1808-019-0620 | 4.40 ppm |
| 2016-03-29 | 1808-020-0628 | 4.40 ppm |
| 2016-04-05 | 1808-018-0720 | 0.900 ppm |
| 2016-04-05 | 1808-019-0630 | 4.60 ppm |
| 2016-04-05 | 1808-020-0703 | 4.30 ppm |
| 2016-04-12 | 1808-018-0708 | 2.30 ppm |
| 2016-04-12 | 1808-019-0635 | 4.60 ppm |
| 2016-04-12 | 1808-020-0640 | 4.20 ppm |
| 2016-04-19 | 1808-018-0715 | 0.300 ppm |
| 2016-04-19 | 1808-019-0625 | 4.80 ppm |
| 2016-04-19 | 1808-020-0655 | 4.20 ppm |
| 2016-04-26 | 1808-018-0655 | 0.1000 ppm |
| 2016-04-26 | 1808-019-0630 | 4.60 ppm |
| 2016-04-26 | 1808-020-0635 | 4.80 ppm |
| 2016-05-03 | 1808-018-0650 | 0.1000 ppm |
| 2016-05-03 | 1808-019-0710 | 4.30 ppm |
| 2016-05-03 | 1808-020-0630 | 4.10 ppm |
| 2016-05-10 | 1808-018-0825 | 0.300 ppm |
| 2016-05-10 | 1808-019-0750 | 4.40 ppm |
| 2016-05-10 | 1808-020-0832 | 4.80 ppm |
| 2016-05-17 | 1808-018-0850 | 0.500 ppm |
| 2016-05-17 | 1808-019-0702 | 4.40 ppm |
| 2016-05-17 | 1808-020-0711 | 4.30 ppm |
| 2016-05-24 | 1808-018-0748 | 0.800 ppm |
| 2016-05-24 | 1808-019-0708 | 4.30 ppm |
| 2016-05-24 | 1808-020-0720 | 3.90 ppm |
| 2016-05-31 | 1808-018-0725 | 0.200 ppm |
| 2016-05-31 | 1808-019-0639 | 4.30 ppm |
| 2016-05-31 | 1808-020-0655 | 3.70 ppm |
| 2016-06-07 | 1808-018-0740 | 0.300 ppm |
| 2016-06-07 | 1808-019-0705 | 4.30 ppm |
| 2016-06-07 | 1808-020-0915 | 4.00 ppm |
| 2016-06-14 | 1808-018-0801 | 0.400 ppm |
| 2016-06-14 | 1808-019-0650 | 4.40 ppm |
| 2016-06-14 | 1808-020-0750 | 4.60 ppm |
| 2016-06-21 | 1808-018-0820 | 0.1000 ppm |
| 2016-06-21 | 1808-019-0707 | 4.40 ppm |
| 2016-06-21 | 1808-020-0755 | 4.30 ppm |
| 2016-06-28 | 1808-018-0740 | 0.500 ppm |
| 2016-06-28 | 1808-019-0630 | 4.90 ppm |
| 2016-06-28 | 1808-020-0713 | 4.80 ppm |
| 2016-07-05 | 1808-018-0620 | 0.300 ppm |
| 2016-07-05 | 1808-019-0744 | 4.50 ppm |
| 2016-07-05 | 1808-020-0750 | 4.10 ppm |
| 2016-07-12 | 1808-018-0710 | 0.1000 ppm |
| 2016-07-12 | 1808-019-0720 | 4.60 ppm |
| 2016-07-12 | 1808-020-0612 | 4.10 ppm |
| 2016-07-19 | 1808-018-0655 | 0.1000 ppm |
| 2016-07-19 | 1808-019-0705 | 4.60 ppm |
| 2016-07-19 | 1808-020-0645 | 3.60 ppm |
| 2016-07-20 | 4790-020-1000 | 4.20 ppm |
| 2016-07-26 | 1808-018-0722 | 1.20 ppm |
| 2016-07-26 | 1808-019-0710 | 4.70 ppm |
| 2016-07-26 | 1808-020-0745 | 4.20 ppm |
| 2016-08-02 | 1808-018-0625 | 0.700 ppm |
| 2016-08-02 | 1808-019-0708 | 4.40 ppm |
| 2016-08-02 | 1808-020-0645 | 4.20 ppm |
| 2016-08-09 | 1808-018-0800 | 0.400 ppm |
| 2016-08-09 | 1808-019-0805 | 4.50 ppm |
| 2016-08-09 | 1808-020-0725 | 4.60 ppm |
| 2016-08-16 | 1808-018-0645 | 0.600 ppm |
| 2016-08-16 | 1808-019-0626 | 4.90 ppm |
| 2016-08-16 | 1808-020-0648 | 4.20 ppm |
| 2016-08-23 | 1808-018-0645 | 0.500 ppm |
| 2016-08-23 | 1808-019-0840 | 4.50 ppm |
| 2016-08-23 | 1808-020-0701 | 4.20 ppm |
| 2016-08-30 | 1808-018-0618 | 0.200 ppm |
| 2016-08-30 | 1808-019-0647 | 4.60 ppm |
| 2016-08-30 | 1808-020-0630 | 4.20 ppm |
| 2016-09-06 | 1808-018-0742 | 0.400 ppm |
| 2016-09-06 | 1808-019-0636 | 4.50 ppm |
| 2016-09-06 | 1808-020-0745 | 4.20 ppm |
| 2016-09-13 | 1808-018-0650 | 0.300 ppm |
| 2016-09-13 | 1808-019-0705 | 4.50 ppm |
| 2016-09-13 | 1808-020-0637 | 4.10 ppm |
| 2016-09-20 | 1808-018-0650 | 0.300 ppm |
| 2016-09-20 | 1808-019-0620 | 4.40 ppm |
| 2016-09-20 | 1808-020-0635 | 4.40 ppm |
| 2016-09-27 | 1808-018-0715 | 0.800 ppm |
| 2016-09-27 | 1808-019-0632 | 3.60 ppm |
| 2016-09-27 | 1808-020-0735 | 3.90 ppm |
| 2016-10-04 | 1808-018-0719 | 1.50 ppm |
| 2016-10-04 | 1808-019-0746 | 4.60 ppm |
| 2016-10-04 | 1808-020-0704 | 4.00 ppm |
| 2016-10-11 | 1808-018-0815 | 1.000 ppm |
| 2016-10-11 | 1808-019-0812 | 4.50 ppm |
| 2016-10-11 | 1808-020-0701 | 4.10 ppm |
| 2016-10-18 | 1808-018-0726 | 0.400 ppm |
| 2016-10-18 | 1808-019-0641 | 4.60 ppm |
| 2016-10-18 | 1808-020-0707 | 4.50 ppm |
| 2016-10-25 | 1808-018-0640 | 0.300 ppm |
| 2016-10-25 | 1808-019-0659 | 4.60 ppm |
| 2016-10-25 | 1808-020-0615 | 4.80 ppm |
| 2016-11-01 | 1808-018-0708 | 0.300 ppm |
| 2016-11-01 | 1808-019-0730 | 4.90 ppm |
| 2016-11-01 | 1808-020-0646 | 4.90 ppm |
| 2016-11-08 | 1808-018-0806 | 2.10 ppm |
| 2016-11-08 | 1808-019-0820 | 4.70 ppm |
| 2016-11-08 | 1808-020-0738 | 4.90 ppm |
| 2016-11-15 | 1808-018-0715 | 0.600 ppm |
| 2016-11-15 | 1808-019-0637 | 5.00 ppm |
| 2016-11-15 | 1808-020-0657 | 4.60 ppm |
| 2016-11-22 | 1808-018-0720 | 0.700 ppm |
| 2016-11-22 | 1808-019-0635 | 5.00 ppm |
| 2016-11-22 | 1808-020-0700 | 3.90 ppm |
| 2016-11-29 | 1808-018-0732 | 0.700 ppm |
| 2016-11-29 | 1808-019-0651 | 5.10 ppm |
| 2016-11-29 | 1808-020-0728 | 4.60 ppm |
| 2016-12-05 | 1808-018-0648 | 0.200 ppm |
| 2016-12-05 | 1808-019-0635 | 4.90 ppm |
| 2016-12-05 | 1808-020-0640 | 4.10 ppm |
| 2016-12-13 | 1808-018-0705 | 0.200 ppm |
| 2016-12-13 | 1808-019-0715 | 4.70 ppm |
| 2016-12-13 | 1808-020-0700 | 4.50 ppm |
| 2016-12-20 | 1808-018-0710 | 1.60 ppm |
| 2016-12-20 | 1808-019-0640 | 4.40 ppm |
| 2016-12-20 | 1808-020-0700 | 3.80 ppm |
| 2016-12-28 | 1808-018-0645 | 0.400 ppm |
| 2016-12-28 | 1808-019-0625 | 4.30 ppm |
| 2016-12-28 | 1808-020-0635 | 3.70 ppm |
| 2017-01-03 | 1808-018-0720 | 0.1000 ppm |
| 2017-01-03 | 1808-019-0645 | 4.40 ppm |
| 2017-01-03 | 1808-020-0703 | 3.70 ppm |
| 2017-01-10 | 1808-018-0925 | 1.30 ppm |
| 2017-01-10 | 1808-019-0805 | 4.30 ppm |
| 2017-01-10 | 1808-020-0820 | 3.60 ppm |
| 2017-01-17 | 1808-018-0745 | 0.300 ppm |
| 2017-01-17 | 1808-019-0640 | 4.00 ppm |
| 2017-01-17 | 1808-020-0732 | 3.40 ppm |
| 2017-01-24 | 1808-018-0820 | 0.200 ppm |
| 2017-01-24 | 1808-019-0620 | 4.10 ppm |
| 2017-01-24 | 1808-020-0810 | 4.50 ppm |
| 2017-01-31 | 1808-018-0725 | 0.300 ppm |
| 2017-01-31 | 1808-019-0646 | 4.30 ppm |
| 2017-01-31 | 1808-020-0712 | 3.70 ppm |
| 2017-02-07 | 1808-018-0805 | 0.400 ppm |
| 2017-02-07 | 1808-019-0740 | 4.30 ppm |
| 2017-02-07 | 1808-020-0745 | 4.40 ppm |
| 2017-02-14 | 1808-018-0800 | 0.300 ppm |
| 2017-02-14 | 1808-019-0710 | 4.10 ppm |
| 2017-02-14 | 1808-020-0745 | 4.10 ppm |
| 2017-02-21 | 1808-018-0755 | 0.900 ppm |
| 2017-02-21 | 1808-019-0802 | 4.20 ppm |
| 2017-02-21 | 1808-020-0738 | 3.70 ppm |
| 2017-02-28 | 1808-018-0728 | 1.000 ppm |
| 2017-02-28 | 1808-019-0745 | 4.20 ppm |
| 2017-02-28 | 1808-020-0703 | 3.70 ppm |
| 2017-03-07 | 1808-018-0801 | 0.300 ppm |
| 2017-03-07 | 1808-019-0710 | 3.90 ppm |
| 2017-03-07 | 1808-020-0740 | 3.30 ppm |
| 2017-03-14 | 1808-018-0605 | 0.400 ppm |
| 2017-03-14 | 1808-019-0528 | 4.10 ppm |
| 2017-03-14 | 1808-020-0542 | 3.80 ppm |
| 2017-03-21 | 1808-018-0855 | 0.500 ppm |
| 2017-03-21 | 1808-019-0730 | 4.00 ppm |
| 2017-03-21 | 1808-020-0815 | 3.40 ppm |
| 2017-03-28 | 1808-018-0745 | 0.400 ppm |
| 2017-03-28 | 1808-019-0650 | 4.30 ppm |
| 2017-03-28 | 1808-020-0728 | 4.20 ppm |
| 2017-04-04 | 1808-018-0800 | 0.700 ppm |
| 2017-04-04 | 1808-019-0700 | 3.90 ppm |
| 2017-04-04 | 1808-020-0745 | 3.40 ppm |
| 2017-04-11 | 1808-018-0655 | 1.30 ppm |
| 2017-04-11 | 1808-019-0550 | 4.20 ppm |
| 2017-04-11 | 1808-020-0601 | 4.20 ppm |
| 2017-04-18 | 1808-018-0750 | 0.500 ppm |
| 2017-04-18 | 1808-019-0812 | 4.00 ppm |
| 2017-04-18 | 1808-020-0715 | 3.40 ppm |
| 2017-04-25 | 1808-018-0730 | 0.700 ppm |
| 2017-04-25 | 1808-019-0710 | 3.90 ppm |
| 2017-04-25 | 1808-020-0715 | 3.10 ppm |
| 2017-05-02 | 1808-018-0710 | 1.70 ppm |
| 2017-05-02 | 1808-019-0645 | ND |
| 2017-05-02 | 1808-020-0605 | 3.60 ppm |
| 2017-05-09 | 1808-018-0810 | 1.40 ppm |
| 2017-05-09 | 1808-019-0740 | 4.00 ppm |
| 2017-05-09 | 1808-020-0748 | 3.60 ppm |
| 2017-05-16 | 1808-018-0740 | 0.600 ppm |
| 2017-05-16 | 1808-019-0800 | 3.90 ppm |
| 2017-05-16 | 1808-020-0715 | 3.10 ppm |
| 2017-05-23 | 1808-018-0715 | 0.700 ppm |
| 2017-05-23 | 1808-019-0740 | 5.10 ppm |
| 2017-05-23 | 1808-020-0653 | 4.10 ppm |
| 2017-05-30 | 1808-018-0740 | 0.600 ppm |
| 2017-05-30 | 1808-019-0755 | 5.10 ppm |
| 2017-05-30 | 1808-020-0705 | 3.90 ppm |
| 2017-06-06 | 1808-018-0710 | 0.600 ppm |
| 2017-06-06 | 1808-019-0740 | 5.00 ppm |
| 2017-06-06 | 1808-020-0650 | 4.00 ppm |
| 2017-06-13 | 1808-018-0900 | 1.40 ppm |
| 2017-06-13 | 1808-019-0800 | 4.60 ppm |
| 2017-06-13 | 1808-020-0830 | 3.70 ppm |
| 2017-06-20 | 1808-018-0740 | 1.50 ppm |
| 2017-06-20 | 1808-019-0750 | 4.90 ppm |
| 2017-06-20 | 1808-020-0715 | 4.40 ppm |
| 2017-06-27 | 1808-018-0750 | 0.200 ppm |
| 2017-06-27 | 1808-019-0755 | 4.60 ppm |
| 2017-06-27 | 1808-020-0740 | 4.50 ppm |
| 2017-07-05 | 1808-018-0755 | 0.600 ppm |
| 2017-07-05 | 1808-019-0810 | 4.50 ppm |
| 2017-07-05 | 1808-020-0730 | 3.60 ppm |
| 2017-07-11 | 1808-018-0810 | 1.10 ppm |
| 2017-07-11 | 1808-019-0820 | 4.90 ppm |
| 2017-07-11 | 1808-020-0725 | 4.00 ppm |
| 2017-07-12 | 4790-020-0600 | 3.90 ppm |
| 2017-07-18 | 1808-018-0655 | 1.30 ppm |
| 2017-07-18 | 1808-019-0635 | 4.90 ppm |
| 2017-07-18 | 1808-020-0830 | 3.90 ppm |
| 2017-07-25 | 1808-018-0815 | 0.200 ppm |
| 2017-07-25 | 1808-019-0710 | 4.80 ppm |
| 2017-07-25 | 1808-020-0830 | 4.40 ppm |
| 2017-08-01 | 1808-018-0750 | 0.600 ppm |
| 2017-08-01 | 1808-019-0710 | 4.60 ppm |
| 2017-08-01 | 1808-020-0737 | 4.40 ppm |
| 2017-08-08 | 1808-018-0920 | 0.200 ppm |
| 2017-08-08 | 1808-019-0800 | 4.60 ppm |
| 2017-08-08 | 1808-020-0822 | 4.30 ppm |
| 2017-08-15 | 1808-018-0845 | 1.20 ppm |
| 2017-08-15 | 1808-019-0820 | 4.30 ppm |
| 2017-08-15 | 1808-020-0630 | 3.60 ppm |
| 2017-08-22 | 1808-018-0655 | 0.700 ppm |
| 2017-08-22 | 1808-019-0700 | 4.40 ppm |
| 2017-08-22 | 1808-020-0750 | 4.30 ppm |
| 2017-08-29 | 1808-018-0750 | 1.000 ppm |
| 2017-08-29 | 1808-019-0710 | 4.50 ppm |
| 2017-08-29 | 1808-020-0640 | 4.20 ppm |
| 2017-09-05 | 1808-018-0820 | 1.30 ppm |
| 2017-09-05 | 1808-019-0735 | 4.40 ppm |
| 2017-09-05 | 1808-020-0832 | 4.60 ppm |
| 2017-09-12 | 1808-018-0930 | 1.40 ppm |
| 2017-09-12 | 1808-019-0820 | 4.40 ppm |
| 2017-09-12 | 1808-020-0815 | 4.60 ppm |
| 2017-09-19 | 1808-018-0500 | 3.00 ppm |
| 2017-09-19 | 1808-019-0455 | 4.40 ppm |
| 2017-09-19 | 1808-020-0530 | 4.90 ppm |
| 2017-09-26 | 1808-018-0815 | 0.700 ppm |
| 2017-09-26 | 1808-019-0720 | 4.50 ppm |
| 2017-09-26 | 1808-020-0745 | 2.80 ppm |
| 2017-10-03 | 1808-018-0725 | 0.500 ppm |
| 2017-10-03 | 1808-019-0940 | 5.20 ppm |
| 2017-10-03 | 1808-020-0707 | 3.70 ppm |
| 2017-10-10 | 1808-018-0830 | 1.60 ppm |
| 2017-10-10 | 1808-019-0940 | 5.40 ppm |
| 2017-10-10 | 1808-020-0735 | 3.50 ppm |
| 2017-10-17 | 1808-018-1100 | 3.30 ppm |
| 2017-10-17 | 1808-019-1050 | 5.20 ppm |
| 2017-10-17 | 1808-020-1110 | 4.40 ppm |
| 2017-10-24 | 1808-018-0740 | 0.600 ppm |
| 2017-10-24 | 1808-019-0710 | 4.60 ppm |
| 2017-10-24 | 1808-020-0715 | 4.00 ppm |
| 2017-10-30 | 1808-018-0750 | 1.50 ppm |
| 2017-10-30 | 1808-019-0705 | 5.00 ppm |
| 2017-10-30 | 1808-020-0725 | 4.30 ppm |
| 2017-11-07 | 1808-018-0730 | 1.30 ppm |
| 2017-11-07 | 1808-019-0750 | 5.10 ppm |
| 2017-11-07 | 1808-020-0707 | 4.30 ppm |
| 2017-11-14 | 1808-018-0745 | 0.600 ppm |
| 2017-11-14 | 1808-019-0855 | 5.00 ppm |
| 2017-11-14 | 1808-020-0700 | 3.70 ppm |
| 2017-11-21 | 1808-018-0740 | 1.40 ppm |
| 2017-11-21 | 1808-019-0805 | 4.50 ppm |
| 2017-11-21 | 1808-020-0715 | 4.30 ppm |
| 2017-11-28 | 1808-018-0700 | 1.20 ppm |
| 2017-11-28 | 1808-019-0735 | 4.50 ppm |
| 2017-11-28 | 1808-020-0730 | 4.10 ppm |
| 2017-12-05 | 1808-019-0655 | 5.10 ppm |
| 2017-12-05 | 1808-020-0725 | 5.40 ppm |
| 2017-12-11 | 1808-019-0730 | 4.40 ppm |
| 2017-12-11 | 1808-020-0635 | 4.20 ppm |
| 2017-12-19 | 1808-018-0755 | 0.200 ppm |
| 2017-12-19 | 1808-019-0750 | 1.000 ppm |
| 2017-12-19 | 1808-020-0645 | 4.30 ppm |
| 2017-12-27 | 1808-018-0944 | ND |
| 2017-12-27 | 1808-019-1000 | 5.00 ppm |
| 2017-12-27 | 1808-020-1115 | 4.60 ppm |
| 2018-01-02 | 1808-018-0750 | 0.400 ppm |
| 2018-01-02 | 1808-019-0650 | 4.90 ppm |
| 2018-01-02 | 1808-020-0715 | 4.30 ppm |
| 2018-01-09 | 1808-018-0840 | 1.30 ppm |
| 2018-01-09 | 1808-019-0905 | 4.90 ppm |
| 2018-01-09 | 1808-020-0720 | 4.20 ppm |
| 2018-01-16 | 1808-018-0840 | 1.80 ppm |
| 2018-01-16 | 1808-019-0855 | 5.20 ppm |
| 2018-01-16 | 1808-020-0810 | 4.10 ppm |
| 2018-01-23 | 1808-018-0755 | 1.000 ppm |
| 2018-01-23 | 1808-019-0805 | 4.80 ppm |
| 2018-01-23 | 1808-020-0730 | 3.90 ppm |
| 2018-01-30 | 1808-018-0715 | 0.400 ppm |
| 2018-01-30 | 1808-019-0720 | 3.90 ppm |
| 2018-01-30 | 1808-020-0650 | 4.00 ppm |
| 2018-02-06 | 1808-018-0815 | 0.400 ppm |
| 2018-02-06 | 1808-019-0650 | 4.10 ppm |
| 2018-02-06 | 1808-020-0835 | 4.10 ppm |
| 2018-02-13 | 1808-018-0730 | 0.200 ppm |
| 2018-02-13 | 1808-019-0800 | 3.90 ppm |
| 2018-02-13 | 1808-020-0700 | 4.40 ppm |
| 2018-02-20 | 1808-018-0825 | 0.900 ppm |
| 2018-02-20 | 1808-019-0807 | 4.00 ppm |
| 2018-02-20 | 1808-020-0845 | 4.10 ppm |
| 2018-02-27 | 1808-018-0715 | 0.800 ppm |
| 2018-02-27 | 1808-019-0725 | 4.20 ppm |
| 2018-02-27 | 1808-020-0645 | 4.00 ppm |
| 2018-03-06 | 1808-018-0850 | 0.700 ppm |
| 2018-03-06 | 1808-019-0910 | 4.90 ppm |
| 2018-03-06 | 1808-020-0835 | 4.50 ppm |
| 2018-03-13 | 1808-018-0820 | 3.20 ppm |
| 2018-03-13 | 1808-019-0830 | 4.10 ppm |
| 2018-03-13 | 1808-020-0650 | 4.20 ppm |
| 2018-03-20 | 1808-018-0900 | 0.900 ppm |
| 2018-03-20 | 1808-019-0725 | 4.10 ppm |
| 2018-03-20 | 1808-020-0805 | 3.60 ppm |
| 2018-03-27 | 1808-018-0730 | 2.60 ppm |
| 2018-03-27 | 1808-019-0735 | 4.30 ppm |
| 2018-03-27 | 1808-020-0700 | 4.30 ppm |
| 2018-04-03 | 1808-018-1300 | 0.600 ppm |
| 2018-04-03 | 1808-019-1305 | 4.20 ppm |
| 2018-04-03 | 1808-020-1240 | 4.40 ppm |
| 2018-04-10 | 1808-018-1300 | 1.80 ppm |
| 2018-04-10 | 1808-019-1300 | 4.80 ppm |
| 2018-04-10 | 1808-020-1250 | 4.20 ppm |
| 2018-04-17 | 1808-018-0735 | 0.800 ppm |
| 2018-04-17 | 1808-019-0610 | 4.50 ppm |
| 2018-04-17 | 1808-020-0750 | 4.40 ppm |
| 2018-04-24 | 1808-018-0710 | 1.80 ppm |
| 2018-04-24 | 1808-019-0720 | 4.20 ppm |
| 2018-04-24 | 1808-020-0640 | 4.10 ppm |
| 2018-05-01 | 1808-018-0755 | 0.500 ppm |
| 2018-05-01 | 1808-019-0700 | 3.90 ppm |
| 2018-05-01 | 1808-020-0710 | 3.90 ppm |
| 2018-05-08 | 1808-018-0940 | 0.600 ppm |
| 2018-05-08 | 1808-019-0900 | 4.20 ppm |
| 2018-05-08 | 1808-020-0950 | 4.20 ppm |
| 2018-05-15 | 1808-018-1030 | 1.40 ppm |
| 2018-05-15 | 1808-019-0825 | 5.40 ppm |
| 2018-05-15 | 1808-020-0855 | 4.60 ppm |
| 2018-05-22 | 1808-018-0815 | 1.90 ppm |
| 2018-05-22 | 1808-019-0730 | 4.40 ppm |
| 2018-05-22 | 1808-020-0750 | 4.70 ppm |
| 2018-05-29 | 1808-018-0900 | 1.000 ppm |
| 2018-05-29 | 1808-019-0820 | 4.40 ppm |
| 2018-05-29 | 1808-020-0835 | 4.40 ppm |
| 2018-06-05 | 1808-018-0855 | 3.50 ppm |
| 2018-06-05 | 1808-019-0820 | 4.20 ppm |
| 2018-06-05 | 1808-020-0830 | 4.50 ppm |
| 2018-06-12 | 1808-018-0840 | 1.40 ppm |
| 2018-06-12 | 1808-019-0815 | 4.30 ppm |
| 2018-06-12 | 1808-020-0820 | 4.70 ppm |
| 2018-06-19 | 1808-018-0845 | 2.20 ppm |
| 2018-06-19 | 1808-019-0815 | 4.20 ppm |
| 2018-06-19 | 1808-020-0830 | 5.00 ppm |
| 2018-06-26 | 1808-018-0709 | 2.90 ppm |
| 2018-06-26 | 1808-019-0742 | 5.20 ppm |
| 2018-06-26 | 1808-020-0730 | 5.10 ppm |
| 2018-07-03 | 1808-018-0730 | 1.30 ppm |
| 2018-07-03 | 1808-019-0830 | 5.20 ppm |
| 2018-07-03 | 1808-020-0900 | 4.90 ppm |
| 2018-07-10 | 1808-019-0745 | 5.30 ppm |
| 2018-07-10 | 1808-020-0800 | 5.10 ppm |
| 2018-07-17 | 1808-018-0915 | 1.90 ppm |
| 2018-07-17 | 1808-019-0920 | 5.10 ppm |
| 2018-07-17 | 1808-020-0830 | 4.50 ppm |
| 2018-07-24 | 1808-018-0955 | 2.40 ppm |
| 2018-07-24 | 1808-019-0950 | 4.80 ppm |
| 2018-07-24 | 1808-020-0925 | 4.50 ppm |
| 2018-07-31 | 1808-018-0625 | 1.30 ppm |
| 2018-07-31 | 1808-019-0700 | 4.30 ppm |
| 2018-07-31 | 1808-020-0715 | 4.00 ppm |
| 2018-08-07 | 1808-018-0740 | 0.700 ppm |
| 2018-08-07 | 1808-019-0650 | 4.70 ppm |
| 2018-08-07 | 1808-020-0715 | 4.30 ppm |
| 2018-08-14 | 4790-020-0730 | 4.60 ppm |
| 2018-08-21 | 1808-018-0820 | 1.60 ppm |
| 2018-08-21 | 1808-019-0805 | 4.70 ppm |
| 2018-08-21 | 1808-020-0730 | 4.40 ppm |
| 2018-08-28 | 1808-018-0835 | 1.60 ppm |
| 2018-08-28 | 1808-019-0820 | 4.70 ppm |
| 2018-08-28 | 1808-020-0730 | 4.60 ppm |
| 2018-10-02 | 4790-018-0820 | 3.10 ppm |
| 2018-10-02 | 4790-019-0715 | 5.00 ppm |
| 2018-10-02 | 4790-020-0740 | 5.10 ppm |
| 2018-10-17 | 4790-018-1041 | 2.20 ppm |
| 2018-10-17 | 4790-019-1026 | 5.00 ppm |
| 2018-10-17 | 4790-020-1102 | 4.70 ppm |
| 2018-10-23 | 4790-018-0740 | 3.30 ppm |
| 2018-10-23 | 4790-019-0730 | 4.70 ppm |
| 2018-10-23 | 4790-020-0800 | 4.70 ppm |
| 2018-10-30 | 4790-018-0854 | 1.30 ppm |
| 2018-10-30 | 4790-019-0844 | 5.20 ppm |
| 2018-10-30 | 4790-020-0920 | 4.20 ppm |
| 2018-11-06 | 4790-018-1140 | 3.20 ppm |
| 2018-11-06 | 4790-019-1125 | 4.50 ppm |
| 2018-11-06 | 4790-020-1055 | 4.80 ppm |
| 2018-11-13 | 4790-018-0935 | 1.60 ppm |
| 2018-11-13 | 4790-019-0720 | 5.00 ppm |
| 2018-11-13 | 4790-020-0830 | 5.10 ppm |
| 2018-11-20 | 4790-018-0801 | 3.20 ppm |
| 2018-11-20 | 4790-019-0748 | 4.80 ppm |
| 2018-11-20 | 4790-020-0840 | 4.50 ppm |
| 2018-11-27 | 4790-018-0755 | 2.00 ppm |
| 2018-11-27 | 4790-019-0745 | 4.80 ppm |
| 2018-11-27 | 4790-020-0815 | 4.60 ppm |
| 2018-12-04 | 4790-018-0815 | 1.20 ppm |
| 2018-12-04 | 4790-019-0804 | 5.00 ppm |
| 2018-12-04 | 4790-020-0835 | 4.50 ppm |
| 2018-12-18 | 4790-018-0655 | 2.90 ppm |
| 2018-12-18 | 4790-019-0650 | 5.40 ppm |
| 2018-12-18 | 4790-020-0700 | 4.50 ppm |
| 2018-12-27 | 4790-018-0920 | 2.70 ppm |
| 2018-12-27 | 4790-019-0735 | 5.30 ppm |
| 2018-12-27 | 4790-020-0935 | 4.80 ppm |
| 2019-01-03 | 4790-018-0730 | 1.40 ppm |
| 2019-01-03 | 4790-019-0722 | 5.40 ppm |
| 2019-01-03 | 4790-020-0745 | 4.20 ppm |
| 2019-01-18 | 4790-018-1718 | 2.90 ppm |
| 2019-01-18 | 4790-019-1722 | 4.80 ppm |
| 2019-01-18 | 4790-020-1700 | 4.90 ppm |
| 2019-01-22 | 4790-018-0748 | 2.60 ppm |
| 2019-01-22 | 4790-019-0740 | 5.00 ppm |
| 2019-01-22 | 4790-020-0757 | 4.60 ppm |
| 2019-01-29 | 4790-018-0825 | 2.50 ppm |
| 2019-01-29 | 4790-019-0817 | 5.50 ppm |
| 2019-01-29 | 4790-020-0838 | 4.80 ppm |
| 2019-02-05 | 4790-018-0805 | 4.40 ppm |
| 2019-02-05 | 4790-019-0800 | 6.30 ppm |
| 2019-02-05 | 4790-020-0735 | 5.40 ppm |
| 2019-02-12 | 4790-018-1030 | 3.40 ppm |
| 2019-02-12 | 4790-019-1025 | 5.50 ppm |
| 2019-02-12 | 4790-020-1000 | 4.80 ppm |
| 2019-02-19 | 4790-018-0740 | 2.60 ppm |
| 2019-02-19 | 4790-019-0710 | 5.60 ppm |
| 2019-02-19 | 4790-020-0720 | 4.60 ppm |
| 2019-02-26 | 1808-018-0810 | 2.30 ppm |
| 2019-02-26 | 1808-019-0800 | 5.70 ppm |
| 2019-02-26 | 1808-020-0822 | 4.90 ppm |
| 2019-03-05 | 1808-018-0745 | 3.90 ppm |
| 2019-03-05 | 1808-019-0730 | 5.60 ppm |
| 2019-03-05 | 1808-020-0715 | 5.10 ppm |
| 2019-03-12 | 1808-018-0854 | 3.80 ppm |
| 2019-03-12 | 1808-019-0845 | 5.80 ppm |
| 2019-03-12 | 1808-020-0910 | 5.20 ppm |
| 2019-03-19 | 1808-018-0707 | 5.70 ppm |
| 2019-03-19 | 1808-019-0700 | 5.70 ppm |
| 2019-03-19 | 1808-020-0930 | 5.80 ppm |
| 2019-03-26 | 1808-018-0758 | 2.80 ppm |
| 2019-03-26 | 1808-019-0733 | 4.60 ppm |
| 2019-03-26 | 1808-020-0744 | 4.20 ppm |
| 2019-04-02 | 1808-018-0640 | 3.70 ppm |
| 2019-04-02 | 1808-019-0636 | 4.10 ppm |
| 2019-04-02 | 1808-020-0655 | 4.10 ppm |
| 2019-04-09 | 1808-019-0724 | 4.30 ppm |
| 2019-04-09 | 1808-020-0740 | 4.20 ppm |
| 2019-04-16 | 1808-018-0725 | 2.80 ppm |
| 2019-04-16 | 1808-019-0719 | 4.00 ppm |
| 2019-04-16 | 1808-020-0732 | 3.90 ppm |
| 2019-04-23 | 1808-018-0710 | 4.60 ppm |
| 2019-04-23 | 1808-019-0645 | 4.20 ppm |
| 2019-04-23 | 1808-020-0654 | 4.40 ppm |
| 2019-04-30 | 1808-018-0755 | 8.50 ppm |
| 2019-04-30 | 1808-019-0656 | 4.30 ppm |
| 2019-04-30 | 1808-020-0730 | 4.90 ppm |
| 2019-05-07 | 1808-018-0748 | 8.10 ppm |
| 2019-05-07 | 1808-019-0727 | 4.20 ppm |
| 2019-05-07 | 1808-020-0737 | 4.60 ppm |
| 2019-05-14 | 1808-018-0705 | 4.80 ppm |
| 2019-05-14 | 1808-019-0715 | 4.80 ppm |
| 2019-05-14 | 1808-020-0711 | 4.90 ppm |
| 2019-05-21 | 1808-018-0735 | 8.10 ppm |
| 2019-05-21 | 1808-019-0700 | 4.70 ppm |
| 2019-05-21 | 1808-020-0720 | 5.00 ppm |
| 2019-05-28 | 1808-018-0648 | 8.30 ppm |
| 2019-05-28 | 1808-019-0641 | 4.50 ppm |
| 2019-05-28 | 1808-020-0644 | 4.80 ppm |
| 2019-06-04 | 1808-018-0720 | 7.10 ppm |
| 2019-06-04 | 1808-019-0710 | 4.20 ppm |
| 2019-06-04 | 1808-020-0725 | 5.40 ppm |
| 2019-06-11 | 1808-019-0617 | 4.50 ppm |
| 2019-06-11 | 1808-020-0625 | 4.50 ppm |
| 2019-06-12 | 1808-018-1120 | 4.20 ppm |
| 2019-06-18 | 1808-018-0709 | 5.60 ppm |
| 2019-06-18 | 1808-019-0704 | 4.90 ppm |
| 2019-06-18 | 1808-020-0718 | 5.20 ppm |
| 2019-06-25 | 1808-018-0650 | 3.40 ppm |
| 2019-06-25 | 1808-019-0625 | 4.50 ppm |
| 2019-06-25 | 1808-020-0630 | 4.00 ppm |
| 2019-07-02 | 1808-018-0615 | 2.30 ppm |
| 2019-07-02 | 1808-019-0640 | 4.50 ppm |
| 2019-07-02 | 1808-020-0625 | 4.90 ppm |
| 2019-07-09 | 1808-018-0940 | 4.50 ppm |
| 2019-07-09 | 1808-019-0935 | 4.60 ppm |
| 2019-07-09 | 1808-020-0927 | 5.40 ppm |
| 2019-07-16 | 1808-018-0700 | 3.50 ppm |
| 2019-07-16 | 1808-019-0645 | 4.10 ppm |
| 2019-07-16 | 1808-020-0705 | 5.60 ppm |
| 2019-07-23 | 1808-018-0653 | 6.20 ppm |
| 2019-07-23 | 1808-019-0655 | 4.20 ppm |
| 2019-07-23 | 1808-020-0657 | 4.30 ppm |
| 2019-07-30 | 4790-018-0650 | 2.20 ppm |
| 2019-07-30 | 4790-019-0645 | 4.50 ppm |
| 2019-07-30 | 4790-020-0710 | 3.80 ppm |
| 2019-08-06 | 4790-018-0645 | 2.20 ppm |
| 2019-08-06 | 4790-019-0633 | 4.10 ppm |
| 2019-08-06 | 4790-020-0642 | 4.00 ppm |
| 2019-08-13 | 4790-018-0645 | ND |
| 2019-08-13 | 4790-019-0625 | 4.20 ppm |
| 2019-08-13 | 4790-020-0635 | 3.80 ppm |
| 2019-08-14 | 4790-020-0830 | 4.90 ppm |
| 2019-08-20 | 4790-018-0653 | ND |
| 2019-08-20 | 4790-019-0642 | 4.20 ppm |
| 2019-08-20 | 4790-020-0655 | 3.20 ppm |
| 2019-08-27 | 4790-018-1015 | ND |
| 2019-08-27 | 4790-019-0942 | 4.40 ppm |
| 2019-08-27 | 4790-020-1005 | 3.20 ppm |
| 2019-09-03 | 4790-018-0718 | 5.00 ppm |
| 2019-09-03 | 4790-019-0650 | 3.60 ppm |
| 2019-09-03 | 4790-020-0656 | 3.00 ppm |
| 2019-09-10 | 4790-018-0655 | 0.460 ppm |
| 2019-09-10 | 4790-019-0650 | 4.90 ppm |
| 2019-09-10 | 4790-020-0705 | 3.90 ppm |
| 2019-09-17 | 4790-018-0720 | 3.80 ppm |
| 2019-09-17 | 4790-019-0640 | 5.00 ppm |
| 2019-09-17 | 4790-020-0705 | 3.70 ppm |
| 2019-09-24 | 4790-018-0645 | 2.30 ppm |
| 2019-09-24 | 4790-019-0650 | 3.90 ppm |
| 2019-09-24 | 4790-020-0750 | 3.90 ppm |
| 2019-10-01 | 4790-018-0645 | 0.730 ppm |
| 2019-10-01 | 4790-019-0640 | 5.20 ppm |
| 2019-10-01 | 4790-020-0620 | 2.80 ppm |
| 2019-10-08 | 4790-018-0818 | ND |
| 2019-10-08 | 4790-019-0718 | 5.00 ppm |
| 2019-10-08 | 4790-020-0742 | 3.60 ppm |
| 2019-10-15 | 4790-018-0803 | 0.430 ppm |
| 2019-10-15 | 4790-019-0650 | 4.70 ppm |
| 2019-10-15 | 4790-020-0807 | 3.20 ppm |
| 2019-10-22 | 4790-019-0640 | 4.80 ppm |
| 2019-10-22 | 4790-020-0710 | 4.30 ppm |
| 2019-10-23 | 4790-018-1027 | 0.490 ppm |
| 2019-10-29 | 4790-018-0846 | 1.20 ppm |
| 2019-10-29 | 4790-019-0802 | 3.60 ppm |
| 2019-10-29 | 4790-020-0836 | 3.10 ppm |
| 2019-11-05 | 4790-018-0752 | 6.80 ppm |
| 2019-11-05 | 4790-019-0726 | 3.80 ppm |
| 2019-11-05 | 4790-020-0737 | 3.30 ppm |
| 2019-11-12 | 4790-018-1215 | 3.60 ppm |
| 2019-11-12 | 4790-019-1131 | 3.70 ppm |
| 2019-11-12 | 4790-020-1135 | 2.60 ppm |
| 2019-11-19 | 4790-018-0710 | 5.00 ppm |
| 2019-11-19 | 4790-019-0700 | 3.60 ppm |
| 2019-11-19 | 4790-020-0725 | 2.80 ppm |
| 2019-11-26 | 4790-018-0635 | ND |
| 2019-11-26 | 4790-019-0625 | 3.70 ppm |
| 2019-11-26 | 4790-020-0650 | 2.20 ppm |
| 2019-12-03 | 4790-018-0716 | 3.30 ppm |
| 2019-12-03 | 4790-019-0712 | 3.80 ppm |
| 2019-12-03 | 4790-020-0730 | 3.00 ppm |
| 2019-12-10 | 4790-018-0634 | ND |
| 2019-12-10 | 4790-019-0630 | 4.00 ppm |
| 2019-12-10 | 4790-020-0700 | 2.60 ppm |
| 2019-12-17 | 4790-018-0704 | 2.80 ppm |
| 2019-12-17 | 4790-019-0700 | 2.30 ppm |
| 2019-12-17 | 4790-020-0715 | 1.80 ppm |
| 2019-12-24 | 4790-018-0840 | ND |
| 2019-12-24 | 4790-019-0658 | 2.30 ppm |
| 2019-12-24 | 4790-020-0826 | 2.60 ppm |
| 2019-12-31 | 4790-018-0730 | ND |
| 2019-12-31 | 4790-019-0805 | 2.30 ppm |
| 2019-12-31 | 4790-020-0740 | 1.60 ppm |