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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 | 0.1 | 0.1 | * | 0.1 | 0.1 | 0.00 | 19 | 0.2 | * | |||||||||||||
2022 | 0.1 | 0.1 | 0.10 | 0.1 | 0.1 | 0.00 | 30 | 0.2 | 3 | |||||||||||||
2021 | 0.1 | 0.1 | * | 0.1 | 0.1 | 0.00 | 23 | 0.2 | * | |||||||||||||
2020 | 0.1 | * | * | * | 0.1 | 0.00 | 9 | 0.2 | * | |||||||||||||
2019 | 0.1 | 0.1 | 0.10 | 0.1 | 0.1 | 0.00 | 30 | 0.2 | 3 | |||||||||||||
2018 | 0.1 | 0.1 | 0.11 | 0.1 | 0.3 | 0.04 | 31 | 0.2 | 3 | |||||||||||||
2017 | 0.1 | 0.1 | 0.11 | 0.1 | 0.2 | 0.02 | 28 | 0.2 | 3 | |||||||||||||
2016 | 0.1 | 0.1 | 0.10 | 0.1 | 0.1 | 0.00 | 30 | 0.2 | 3 | |||||||||||||
2015 | 0.1 | 0.1 | 0.11 | 0.1 | 0.2 | 0.02 | 30 | 0.2 | 3 | |||||||||||||
2014 | 0.1 | 0.1 | 0.10 | 0.1 | 0.2 | 0.03 | 30 | 0.2 | 3 | |||||||||||||
2013 | 0.1 | 0.1 | 0.10 | 0.1 | 0.2 | 0.02 | 31 | 0.2 | 3 | |||||||||||||
2012 | 0.1 | 0.1 | 0.12 | 0.1 | 0.4 | 0.07 | 29 | 0.2 | 4 | |||||||||||||
2011 | 0.1 | 0.1 | 0.11 | 0.1 | 0.3 | 0.05 | 31 | 0.2 | 4 | |||||||||||||
2010 | 0.1 | 0.1 | 0.13 | 0.3 | 0.3 | 0.07 | 29 | 0.2 | 4 | |||||||||||||
2009 | 0.1 | 0.1 | 0.11 | 0.1 | 0.3 | 0.04 | 28 | 0.2 | 3 | |||||||||||||
2008 | 0.1 | 0.1 | 0.10 | 0.1 | 0.1 | 0.00 | 31 | 0.2 | 3 | |||||||||||||
2007 | 0.1 | 0.1 | 0.13 | 0.2 | 0.4 | 0.09 | 29 | 0.2 | 4 | |||||||||||||
2006 | 0.1 | 0.1 | 0.13 | 0.3 | 0.4 | 0.07 | 30 | 0.2 | 4 | |||||||||||||
2005 | 0.1 | 0.1 | 0.11 | 0.1 | 0.4 | 0.05 | 31 | 0.2 | 3 | |||||||||||||
2004 | 0.1 | 0.1 | 0.15 | 0.3 | 0.4 | 0.08 | 30 | 0.2 | 5 | |||||||||||||
2003 | 0.1 | 0.1 | 0.18 | 0.4 | 0.8 | 0.16 | 31 | 0.2 | 6 | |||||||||||||
2002 | 0.1 | 0.1 | * | 0.3 | 0.4 | 0.10 | 16 | 0.2 | * | |||||||||||||
2001 | 0.3 | 0.1 | 0.17 | 0.1 | 0.3 | 0.10 | 25 | 0.2 | 5 | |||||||||||||
2000 | 0.3 | 0.3 | 0.30 | 0.3 | 0.3 | 0.00 | 27 | 0.6 | 9 | |||||||||||||
1999 | 0.3 | 0.3 | 0.33 | 0.3 | 0.7 | 0.11 | 24 | 0.6 | 10 | |||||||||||||
1998 | 0.3 | 0.3 | * | 0.3 | 1.0 | 0.14 | 28 | 0.6 | * | |||||||||||||
1997 | 0.3 | 0.3 | 0.31 | 0.3 | 0.6 | 0.06 | 29 | 0.6 | 9 | |||||||||||||
1996 | 0.3 | 0.3 | 0.33 | 0.3 | 0.8 | 0.11 | 31 | 0.6 | 10 | |||||||||||||
1995 | 0.3 | 0.3 | 0.34 | 0.3 | 1.0 | 0.17 | 29 | 0.6 | 11 | |||||||||||||
1994 | 0.3 | 0.3 | 0.36 | 0.6 | 0.8 | 0.13 | 30 | 0.6 | 11 | |||||||||||||
1993 | 0.3 | 0.3 | * | 0.6 | 1.0 | 0.20 | 27 | 0.6 | * | |||||||||||||
1992 | 0.3 | 0.3 | 0.45 | 0.8 | 1.1 | 0.23 | 29 | 0.6 | 14 | |||||||||||||
1991 | 0.3 | 0.3 | * | 0.3 | 0.9 | 0.14 | 21 | 0.6 | * | |||||||||||||
1990 | 0.3 | 0.3 | * | 0.8 | 1.3 | 0.28 | 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. |