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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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2024 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
2023 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
2022 | 0.1 | 0.1 | * | 0.1 | 0.2 | 0.03 | 11 | 0.2 | * | |||||||||||||
2021 | 0.1 | 0.1 | * | 0.1 | 0.4 | 0.06 | 22 | 0.2 | * | |||||||||||||
2020 | 0.1 | * | * | * | 0.1 | 0.00 | 5 | 0.2 | * | |||||||||||||
2019 | 0.1 | 0.1 | * | 0.2 | 0.3 | 0.05 | 20 | 0.2 | * | |||||||||||||
2018 | 0.1 | 0.1 | * | 0.1 | 0.5 | 0.09 | 20 | 0.2 | * | |||||||||||||
2017 | 0.1 | 0.1 | 0.14 | 0.3 | 0.4 | 0.08 | 29 | 0.2 | 4 | |||||||||||||
2016 | 0.1 | 0.1 | 0.20 | 0.5 | 1.1 | 0.22 | 30 | 0.2 | 6 | |||||||||||||
2015 | 0.1 | 0.9 | 0.91 | 1.5 | 1.9 | 0.40 | 26 | 0.2 | 28 | |||||||||||||
2014 | 0.1 | 2.0 | * | 4.6 | 12 | 2.75 | 24 | 0.2 | * | |||||||||||||
2013 | 0.1 | 0.4 | 0.41 | 0.7 | 0.8 | 0.16 | 31 | 0.2 | 13 | |||||||||||||
2012 | 0.1 | 0.4 | 3.03 | 3.9 | 48 | 8.95 | 29 | 0.2 | 93 | |||||||||||||
2011 | 0.1 | 0.1 | 0.16 | 0.3 | 0.6 | 0.13 | 31 | 0.2 | 5 | |||||||||||||
2010 | 0.1 | 0.1 | 0.18 | 0.3 | 0.6 | 0.13 | 29 | 0.2 | 6 | |||||||||||||
2009 | 0.1 | 0.1 | 0.20 | 0.4 | 0.5 | 0.13 | 29 | 0.2 | 6 | |||||||||||||
2008 | 0.1 | 0.1 | 0.17 | 0.4 | 0.6 | 0.13 | 29 | 0.2 | 5 | |||||||||||||
2007 | 0.1 | 0.1 | 0.21 | 0.4 | 0.5 | 0.13 | 23 | 0.2 | 6 | |||||||||||||
2006 | 0.1 | 0.2 | * | 0.4 | 0.6 | 0.13 | 25 | 0.2 | * | |||||||||||||
2005 | 0.1 | 0.3 | 0.28 | 0.5 | 0.8 | 0.18 | 30 | 0.2 | 8 | |||||||||||||
2004 | 0.1 | 0.3 | 0.30 | 0.5 | 0.6 | 0.15 | 24 | 0.2 | 9 | |||||||||||||
2003 | 0.1 | 0.3 | 0.35 | 0.5 | 1.2 | 0.21 | 29 | 0.2 | 11 | |||||||||||||
2002 | 0.1 | 0.3 | * | 0.7 | 0.8 | 0.21 | 23 | 0.2 | * | |||||||||||||
2001 | 0.1 | 0.2 | 0.28 | 0.6 | 1.2 | 0.27 | 24 | 0.2 | 9 | |||||||||||||
2000 | 0.3 | 0.3 | 0.33 | 0.3 | 0.7 | 0.10 | 29 | 0.6 | 10 | |||||||||||||
1999 | 0.3 | 0.3 | 0.87 | 1.0 | 5.4 | 1.09 | 22 | 0.6 | 27 | |||||||||||||
1998 | 0.3 | 0.3 | 0.36 | 0.7 | 0.8 | 0.16 | 28 | 0.6 | 11 | |||||||||||||
1997 | 0.3 | 0.3 | * | 1.0 | 1.5 | 0.33 | 22 | 0.6 | * | |||||||||||||
1996 | 0.3 | 0.3 | 0.54 | 0.8 | 2.6 | 0.48 | 28 | 0.6 | 16 | |||||||||||||
1995 | 0.3 | 0.6 | 0.66 | 1.2 | 1.6 | 0.42 | 31 | 0.6 | 20 | |||||||||||||
1994 | 0.3 | 0.3 | 0.59 | 1.1 | 2.0 | 0.41 | 30 | 0.6 | 18 | |||||||||||||
1993 | 0.3 | 0.3 | 0.73 | 1.3 | 1.5 | 0.46 | 26 | 0.6 | 22 | |||||||||||||
1992 | 0.3 | 0.8 | 0.90 | 1.5 | 1.9 | 0.44 | 31 | 0.6 | 28 | |||||||||||||
1991 | 0.3 | 0.3 | 0.69 | 1.7 | 2.1 | 0.60 | 23 | 0.6 | 21 | |||||||||||||
1990 | 0.3 | 0.6 | * | 1.0 | 1.1 | 0.27 | 16 | 0.6 | * | |||||||||||||
1989 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
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. |