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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 |
|
0.025 | 0.11 | * | 0.24 | 0.41 | 0.097 | 17 | 0.05 | * | ||||||||||||
2023 |
|
0.025 | 0.15 | 0.153 | 0.27 | 0.31 | 0.083 | 31 | 0.05 | 40 | ||||||||||||
2022 |
|
0.025 | 0.1 | 0.117 | 0.21 | 0.29 | 0.073 | 30 | 0.05 | 30 | ||||||||||||
2021 |
|
0.025 | 0.13 | * | 0.22 | 0.3 | 0.076 | 23 | 0.05 | * | ||||||||||||
2020 |
|
0.11 | * | * | * | 0.34 | 0.094 | 9 | 0.05 | * | ||||||||||||
2019 |
|
0.025 | 0.13 | 0.153 | 0.27 | 0.36 | 0.086 | 29 | 0.05 | 40 | ||||||||||||
2018 |
|
0.025 | 0.14 | 0.188 | 0.29 | 0.69 | 0.153 | 31 | 0.05 | 49 | ||||||||||||
2017 |
|
0.05 | 0.17 | 0.192 | 0.37 | 0.42 | 0.12 | 28 | 0.05 | 50 | ||||||||||||
2016 |
|
0.025 | 0.19 | 0.238 | 0.44 | 0.57 | 0.146 | 30 | 0.05 | 62 | ||||||||||||
2015 |
|
0.05 | 0.17 | 0.20 | 0.34 | 0.5 | 0.118 | 31 | 0.05 | 52 | ||||||||||||
2014 |
|
0.05 | 0.17 | 0.192 | 0.35 | 0.42 | 0.11 | 29 | 0.05 | 50 | ||||||||||||
2013 |
|
0.05 | 0.16 | 0.199 | 0.3 | 0.56 | 0.124 | 30 | 0.05 | 52 | ||||||||||||
2012 |
|
0.09 | 0.17 | 0.228 | 0.36 | 0.47 | 0.113 | 30 | 0.05 | 59 | ||||||||||||
2011 |
|
0.05 | 0.18 | 0.222 | 0.44 | 0.73 | 0.175 | 31 | 0.05 | 58 | ||||||||||||
2010 |
|
0.07 | 0.21 | 0.255 | 0.48 | 0.6 | 0.149 | 30 | 0.05 | 66 | ||||||||||||
2009 |
|
0.06 | 0.22 | 0.274 | 0.51 | 0.73 | 0.182 | 32 | 0.05 | 71 | ||||||||||||
2008 |
|
0.08 | 0.23 | 0.288 | 0.51 | 0.8 | 0.19 | 30 | 0.05 | 75 | ||||||||||||
2007 |
|
0.07 | 0.2 | 0.273 | 0.59 | 0.72 | 0.196 | 31 | 0.05 | 71 | ||||||||||||
2006 |
|
0.07 | 0.26 | * | 0.59 | 0.9 | 0.225 | 26 | 0.05 | * | ||||||||||||
2005 |
|
0.08 | 0.26 | 0.358 | 0.7 | 1.0 | 0.269 | 29 | 0.05 | 93 | ||||||||||||
2004 |
|
0.09 | 0.32 | 0.341 | 0.54 | 0.66 | 0.167 | 31 | 0.05 | 89 | ||||||||||||
2003 |
|
0.15 | 0.36 | * | 0.69 | 0.8 | 0.203 | 28 | 0.05 | * | ||||||||||||
2002 |
|
0.13 | 0.32 | 0.419 | 0.72 | 1.0 | 0.238 | 31 | 0.05 | 109 | ||||||||||||
2001 |
|
0.09 | 0.36 | 0.421 | 0.91 | 1.1 | 0.296 | 30 | 0.05 | 110 | ||||||||||||
2000 |
|
0.1 | 0.4 | 0.55 | 1.3 | 1.8 | 0.44 | 30 | 0.2 | 143 | ||||||||||||
1999 |
|
0.1 | 0.8 | * | 1.4 | 1.6 | 0.47 | 21 | 0.2 | * | ||||||||||||
1998 |
|
0.1 | 0.5 | 0.61 | 1.2 | 2.8 | 0.57 | 29 | 0.2 | 158 | ||||||||||||
1997 |
|
0.1 | 0.5 | 0.63 | 1.3 | 2.0 | 0.47 | 29 | 0.2 | 163 | ||||||||||||
1996 |
|
0.25 | 0.5 | * | 1.3 | 2.7 | 0.57 | 26 | 0.5 | * | ||||||||||||
1995 |
|
0.25 | 0.9 | 0.81 | 1.5 | 2.8 | 0.67 | 29 | 0.5 | 211 | ||||||||||||
1994 |
|
0.25 | 1.0 | 1.08 | 1.9 | 2.4 | 0.70 | 31 | 0.5 | 281 | ||||||||||||
1993 |
|
0.25 | 0.8 | 0.80 | 1.5 | 2.0 | 0.56 | 31 | 0.5 | 209 | ||||||||||||
1992 |
|
0.25 | 1.0 | 1.03 | 1.9 | 2.4 | 0.63 | 30 | 0.5 | 267 | ||||||||||||
1991 |
|
0.25 | 1.0 | 1.21 | 2.2 | 3.2 | 0.85 | 30 | 0.5 | 315 | ||||||||||||
1990 |
|
0.25 | 1.7 | 2.00 | 3.7 | 4.2 | 1.17 | 31 | 0.5 | 521 | ||||||||||||
1989 |
|
0.25 | 1.6 | 1.96 | 3.2 | 3.7 | 1.01 | 24 | 0.5 | 511 | ||||||||||||
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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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