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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 | 0.01 | 0.01 | * | 0.01 | 0.01 | 0.000 | 14 | 0.02 | * | |||||||||||||
2023 | 0.01 | 0.01 | 0.010 | 0.01 | 0.01 | 0.000 | 30 | 0.02 | 0.3 | |||||||||||||
2022 | 0.01 | 0.01 | 0.010 | 0.01 | 0.01 | 0.000 | 29 | 0.02 | 0.3 | |||||||||||||
2021 | 0.01 | 0.01 | * | 0.01 | 0.01 | 0.000 | 22 | 0.02 | * | |||||||||||||
2020 | 0.01 | * | * | * | 0.01 | 0.000 | 7 | 0.02 | * | |||||||||||||
2019 | 0.01 | 0.01 | * | 0.01 | 0.01 | 0.000 | 26 | 0.02 | * | |||||||||||||
2018 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
2017 | 0.01 | 0.01 | * | 0.01 | 0.01 | 0.000 | 20 | 0.02 | * | |||||||||||||
2016 | 0.01 | 0.01 | 0.010 | 0.01 | 0.02 | 0.002 | 29 | 0.02 | 0.3 | |||||||||||||
2015 | 0.01 | 0.01 | * | 0.03 | 0.04 | 0.009 | 25 | 0.02 | * | |||||||||||||
2014 | 0.01 | 0.01 | 0.013 | 0.01 | 0.05 | 0.011 | 28 | 0.02 | 0.4 | |||||||||||||
2013 | 0.01 | 0.01 | 0.012 | 0.01 | 0.04 | 0.006 | 31 | 0.02 | 0.4 | |||||||||||||
2012 | 0.01 | 0.01 | 0.013 | 0.01 | 0.07 | 0.014 | 30 | 0.02 | 0.4 | |||||||||||||
2011 | 0.01 | 0.01 | 0.014 | 0.01 | 0.06 | 0.012 | 31 | 0.02 | 0.4 | |||||||||||||
2010 | 0.01 | 0.01 | 0.012 | 0.01 | 0.03 | 0.005 | 31 | 0.02 | 0.4 | |||||||||||||
2009 | 0.01 | 0.01 | * | 0.01 | 0.03 | 0.004 | 27 | 0.02 | * | |||||||||||||
2008 | 0.01 | 0.01 | 0.012 | 0.01 | 0.03 | 0.004 | 30 | 0.02 | 0.4 | |||||||||||||
2007 | 0.01 | 0.01 | 0.013 | 0.02 | 0.03 | 0.006 | 30 | 0.02 | 0.4 | |||||||||||||
2006 | 0.01 | 0.01 | 0.012 | 0.02 | 0.04 | 0.007 | 29 | 0.02 | 0.4 | |||||||||||||
2005 | 0.01 | 0.01 | 0.035 | 0.04 | 0.58 | 0.102 | 31 | 0.02 | 1 | |||||||||||||
2004 | 0.01 | 0.01 | 0.017 | 0.04 | 0.06 | 0.013 | 30 | 0.02 | 0.5 | |||||||||||||
2003 | 0.01 | 0.01 | 0.020 | 0.04 | 0.08 | 0.016 | 30 | 0.02 | 0.6 | |||||||||||||
2002 | 0.01 | 0.02 | * | 0.04 | 0.04 | 0.011 | 26 | 0.02 | * | |||||||||||||
2001 | 0.01 | 0.02 | 0.031 | 0.06 | 0.10 | 0.024 | 31 | 0.02 | 0.9 | |||||||||||||
2000 | 0.01 | 0.03 | 0.040 | 0.05 | 0.35 | 0.061 | 30 | 0.02 | 1 | |||||||||||||
1999 | 0.01 | 0.01 | * | 0.05 | 0.06 | 0.018 | 27 | 0.02 | * | |||||||||||||
1998 | 0.01 | 0.01 | * | 0.04 | 0.05 | 0.014 | 15 | 0.02 | * | |||||||||||||
1997 | 0.01 | * | * | * | 0.01 | 0.073 | 1 | 0.02 | * | |||||||||||||
1996 | 0.01 | 0.01 | 0.024 | 0.03 | 0.42 | 0.073 | 31 | 0.02 | 0.7 | |||||||||||||
1995 | 0.01 | 0.02 | 0.018 | 0.03 | 0.05 | 0.011 | 31 | 0.02 | 0.6 | |||||||||||||
1994 | 0.01 | 0.01 | 0.018 | 0.04 | 0.08 | 0.017 | 31 | 0.02 | 0.6 | |||||||||||||
1993 | 0.01 | 0.01 | 0.020 | 0.03 | 0.13 | 0.023 | 29 | 0.02 | 0.6 | |||||||||||||
1992 | 0.01 | 0.05 | 0.074 | 0.08 | 0.53 | 0.100 | 30 | 0.02 | 2 | |||||||||||||
1991 | 0.03 | 0.11 | 0.104 | 0.16 | 0.26 | 0.047 | 29 | 0.02 | 3 | |||||||||||||
1990 | 0.03 | 0.11 | 0.262 | 0.38 | 1.5 | 0.311 | 27 | 0.02 | 8 | |||||||||||||
1989 | 0.03 | 0.18 | 0.246 | 0.49 | 0.59 | 0.169 | 19 | 0.02 | 8 | |||||||||||||
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. |