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Read About Estimated Risk |
Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
Estimated Risk |
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2023 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
2022 | 0.005 | 0.01 | * | 0.01 | 0.02 | 0.004 | 11 | 0.01 | * | |||||||||||||
2021 | 0.005 | 0.01 | * | 0.02 | 0.03 | 0.007 | 22 | 0.01 | * | |||||||||||||
2020 | 0.005 | * | * | * | 0.02 | 0.008 | 5 | 0.01 | * | |||||||||||||
2019 | 0.005 | 0.01 | * | 0.03 | 0.04 | 0.009 | 20 | 0.01 | * | |||||||||||||
2018 | 0.005 | 0.02 | * | 0.04 | 0.09 | 0.019 | 20 | 0.01 | * | |||||||||||||
2017 | 0.005 | 0.01 | 0.023 | 0.06 | 0.11 | 0.025 | 29 | 0.01 | 3 | |||||||||||||
2016 | 0.005 | 0.02 | 0.023 | 0.05 | 0.06 | 0.016 | 31 | 0.01 | 3 | |||||||||||||
2015 | 0.005 | 0.02 | 0.023 | 0.04 | 0.08 | 0.018 | 26 | 0.01 | 3 | |||||||||||||
2014 | 0.01 | 0.02 | * | 0.05 | 0.07 | 0.016 | 24 | 0.01 | * | |||||||||||||
2013 | 0.01 | 0.02 | 0.033 | 0.07 | 0.11 | 0.025 | 31 | 0.01 | 4 | |||||||||||||
2012 | 0.005 | 0.03 | 0.031 | 0.05 | 0.07 | 0.016 | 29 | 0.01 | 4 | |||||||||||||
2011 | 0.005 | 0.03 | 0.042 | 0.08 | 0.12 | 0.028 | 31 | 0.01 | 5 | |||||||||||||
2010 | 0.005 | 0.03 | 0.046 | 0.09 | 0.17 | 0.039 | 29 | 0.01 | 5 | |||||||||||||
2009 | 0.005 | 0.03 | 0.046 | 0.08 | 0.15 | 0.037 | 29 | 0.01 | 5 | |||||||||||||
2008 | 0.02 | 0.04 | 0.044 | 0.08 | 0.11 | 0.026 | 29 | 0.01 | 5 | |||||||||||||
2007 | 0.01 | 0.05 | 0.057 | 0.09 | 0.17 | 0.036 | 23 | 0.01 | 7 | |||||||||||||
2006 | 0.01 | 0.06 | * | 0.13 | 0.33 | 0.066 | 25 | 0.01 | * | |||||||||||||
2005 | 0.005 | 0.06 | 0.087 | 0.16 | 0.23 | 0.059 | 30 | 0.01 | 10 | |||||||||||||
2004 | 0.03 | 0.08 | 0.088 | 0.12 | 0.23 | 0.046 | 24 | 0.01 | 10 | |||||||||||||
2003 | 0.03 | 0.09 | 0.109 | 0.18 | 0.41 | 0.076 | 29 | 0.01 | 13 | |||||||||||||
2002 | 0.03 | 0.14 | * | 0.31 | 0.40 | 0.102 | 23 | 0.01 | * | |||||||||||||
2001 | 0.06 | 0.16 | 0.177 | 0.31 | 0.42 | 0.102 | 28 | 0.01 | 21 | |||||||||||||
2000 | 0.08 | 0.15 | 0.187 | 0.32 | 0.54 | 0.107 | 29 | 0.01 | 22 | |||||||||||||
1999 | 0.09 | 0.25 | * | 0.35 | 0.54 | 0.115 | 15 | 0.01 | * | |||||||||||||
1998 | 0.01 | 0.23 | 0.232 | 0.44 | 0.50 | 0.136 | 28 | 0.01 | 27 | |||||||||||||
1997 | 0.06 | 0.37 | * | 0.49 | 0.71 | 0.152 | 22 | 0.01 | * | |||||||||||||
1996 | 0.12 | 0.37 | 0.502 | 0.91 | 1.5 | 0.315 | 28 | 0.01 | 58 | |||||||||||||
1995 | 0.06 | 0.45 | 0.574 | 1.1 | 1.4 | 0.380 | 31 | 0.01 | 67 | |||||||||||||
1994 | 0.03 | 0.42 | 0.503 | 0.87 | 2.0 | 0.425 | 30 | 0.01 | 58 | |||||||||||||
1993 | 0.05 | 0.51 | 0.588 | 1.0 | 1.1 | 0.326 | 26 | 0.01 | 68 | |||||||||||||
1992 | 0.20 | 0.51 | 0.536 | 0.81 | 1.0 | 0.209 | 31 | 0.01 | 62 | |||||||||||||
1991 | 0.07 | 0.48 | 0.603 | 1.1 | 2.8 | 0.540 | 28 | 0.01 | 70 | |||||||||||||
1990 | 0.24 | 0.48 | 0.551 | 0.94 | 1.1 | 0.256 | 29 | 0.01 | 64 | |||||||||||||
1989 | 0.19 | 0.68 | * | 1.45 | 2.3 | 0.585 | 20 | 0.01 | * | |||||||||||||
Notes: | Values below the Limit of Detection (LoD) assumed to be ½ LoD. Means and risks shown only for years with data in all 12 months. "*" means there was insufficient or no data available to determine the value. |