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Read About Estimated Risk |
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Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
Estimated Risk |
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2024 |
|
* | * | * | * | * | * | 0 | * | * | ||||||||||||
2023 |
|
* | * | * | * | * | * | 0 | * | * | ||||||||||||
2022 |
|
0.02 | 0.02 | * | 0.02 | 0.02 | 0.000 | 16 | 0.04 | * | ||||||||||||
2021 |
|
0.02 | 0.02 | * | 0.02 | 0.05 | 0.005 | 23 | 0.04 | * | ||||||||||||
2020 |
|
0.02 | * | * | * | 0.06 | 0.012 | 9 | 0.04 | * | ||||||||||||
2019 |
|
0.02 | 0.02 | 0.023 | 0.02 | 0.07 | 0.010 | 30 | 0.04 | 25 | ||||||||||||
2018 |
|
0.02 | 0.02 | 0.025 | 0.02 | 0.08 | 0.013 | 30 | 0.04 | 27 | ||||||||||||
2017 |
|
0.02 | 0.02 | 0.023 | 0.02 | 0.09 | 0.015 | 30 | 0.04 | 25 | ||||||||||||
2016 |
|
0.02 | 0.02 | 0.035 | 0.08 | 0.10 | 0.027 | 31 | 0.04 | 38 | ||||||||||||
2015 |
|
0.02 | 0.02 | 0.029 | 0.05 | 0.08 | 0.015 | 28 | 0.04 | 31 | ||||||||||||
2014 |
|
0.02 | 0.02 | 0.027 | 0.05 | 0.10 | 0.018 | 28 | 0.04 | 29 | ||||||||||||
2013 |
|
0.02 | 0.02 | * | 0.07 | 0.10 | 0.025 | 26 | 0.04 | * | ||||||||||||
2012 |
|
0.02 | 0.02 | * | 0.08 | 0.10 | 0.027 | 20 | 0.04 | * | ||||||||||||
2011 |
|
0.02 | 0.02 | 0.031 | 0.06 | 0.10 | 0.021 | 31 | 0.04 | 34 | ||||||||||||
2010 |
|
0.02 | 0.02 | 0.035 | 0.07 | 0.11 | 0.026 | 30 | 0.04 | 38 | ||||||||||||
2009 |
|
0.02 | 0.02 | 0.041 | 0.09 | 0.12 | 0.031 | 31 | 0.04 | 44 | ||||||||||||
2008 |
|
0.02 | 0.02 | 0.034 | 0.07 | 0.10 | 0.023 | 32 | 0.04 | 37 | ||||||||||||
2007 |
|
0.02 | 0.02 | 0.044 | 0.09 | 0.17 | 0.039 | 31 | 0.04 | 48 | ||||||||||||
2006 |
|
0.02 | 0.02 | 0.049 | 0.11 | 0.15 | 0.038 | 31 | 0.04 | 53 | ||||||||||||
2005 |
|
0.02 | 0.02 | 0.047 | 0.10 | 0.18 | 0.045 | 30 | 0.04 | 51 | ||||||||||||
2004 |
|
0.02 | 0.04 | 0.053 | 0.12 | 0.16 | 0.043 | 31 | 0.04 | 58 | ||||||||||||
2003 |
|
0.02 | 0.06 | 0.067 | 0.12 | 0.24 | 0.051 | 31 | 0.04 | 72 | ||||||||||||
2002 |
|
0.02 | 0.08 | 0.134 | 0.26 | 0.44 | 0.107 | 27 | 0.04 | 145 | ||||||||||||
2001 |
|
0.02 | 0.11 | 0.118 | 0.25 | 0.33 | 0.081 | 27 | 0.04 | 128 | ||||||||||||
2000 |
|
0.02 | 0.08 | 0.103 | 0.21 | 0.34 | 0.083 | 30 | 0.04 | 112 | ||||||||||||
1999 |
|
0.02 | 0.10 | * | 0.26 | 0.39 | 0.098 | 25 | 0.04 | * | ||||||||||||
1998 |
|
0.02 | 0.15 | * | 0.19 | 0.37 | 0.077 | 28 | 0.04 | * | ||||||||||||
1997 |
|
0.02 | 0.14 | 0.138 | 0.24 | 0.41 | 0.086 | 30 | 0.04 | 149 | ||||||||||||
1996 |
|
0.02 | 0.14 | 0.161 | 0.28 | 0.31 | 0.082 | 30 | 0.04 | 174 | ||||||||||||
1995 |
|
0.02 | 0.15 | 0.198 | 0.38 | 0.41 | 0.107 | 31 | 0.04 | 214 | ||||||||||||
1994 |
|
0.02 | 0.18 | 0.230 | 0.35 | 0.56 | 0.128 | 29 | 0.04 | 248 | ||||||||||||
1993 |
|
0.07 | 0.18 | 0.237 | 0.49 | 0.72 | 0.171 | 28 | 0.04 | 257 | ||||||||||||
1992 |
|
0.02 | 0.16 | 0.182 | 0.36 | 0.54 | 0.133 | 29 | 0.04 | 197 | ||||||||||||
1991 |
|
0.02 | 0.11 | 0.180 | 0.50 | 0.57 | 0.175 | 29 | 0.04 | 194 | ||||||||||||
1990 |
|
0.02 | 0.18 | 0.214 | 0.40 | 0.67 | 0.160 | 30 | 0.04 | 232 | ||||||||||||
1989 |
|
0.02 | 0.16 | 0.242 | 0.49 | 0.59 | 0.195 | 21 | 0.04 | 262 | ||||||||||||
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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. |
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