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Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
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2023 | * | * | * | * | * | * | 0 | * | |||||||||||||
2022 | * | * | * | * | * | * | 0 | * | |||||||||||||
2021 | * | * | * | * | * | * | 0 | * | |||||||||||||
2020 | * | * | * | * | * | * | 0 | * | |||||||||||||
2019 | * | * | * | * | * | * | 0 | * | |||||||||||||
2018 | * | * | * | * | * | * | 0 | * | |||||||||||||
2017 | * | * | * | * | * | * | 0 | * | |||||||||||||
2016 | * | * | * | * | * | * | 0 | * | |||||||||||||
2015 | * | * | * | * | * | * | 0 | * | |||||||||||||
2014 | * | * | * | * | * | * | 0 | * | |||||||||||||
2013 | 0.005 | 0.005 | 0.005 | 0.005 | 0.01 | 0.002 | 30 | 0.01 | |||||||||||||
2012 | 0.005 | 0.005 | 0.006 | 0.01 | 0.01 | 0.002 | 30 | 0.01 | |||||||||||||
2011 | 0.005 | 0.005 | 0.007 | 0.01 | 0.01 | 0.003 | 31 | 0.01 | |||||||||||||
2010 | 0.005 | 0.01 | 0.010 | 0.01 | 0.02 | 0.004 | 30 | 0.01 | |||||||||||||
2009 | 0.005 | 0.01 | 0.011 | 0.02 | 0.02 | 0.004 | 31 | 0.01 | |||||||||||||
2008 | 0.01 | 0.01 | 0.014 | 0.02 | 0.03 | 0.006 | 30 | 0.01 | |||||||||||||
2007 | 0.01 | 0.01 | 0.014 | 0.02 | 0.02 | 0.005 | 28 | 0.01 | |||||||||||||
2006 | 0.02 | 0.02 | 0.021 | 0.03 | 0.03 | 0.003 | 32 | 0.01 | |||||||||||||
2005 | 0.02 | 0.02 | 0.025 | 0.03 | 0.04 | 0.006 | 28 | 0.01 | |||||||||||||
2004 | 0.005 | 0.03 | 0.027 | 0.03 | 0.04 | 0.006 | 29 | 0.01 | |||||||||||||
2003 | 0.02 | 0.04 | 0.035 | 0.04 | 0.05 | 0.006 | 30 | 0.01 | |||||||||||||
2002 | 0.03 | 0.04 | 0.046 | 0.06 | 0.06 | 0.009 | 29 | 0.01 | |||||||||||||
2001 | 0.04 | 0.05 | 0.049 | 0.06 | 0.07 | 0.008 | 30 | 0.01 | |||||||||||||
2000 | 0.05 | 0.06 | 0.074 | 0.10 | 0.16 | 0.026 | 27 | 0.01 | |||||||||||||
1999 | 0.05 | 0.09 | * | 0.12 | 0.13 | 0.023 | 14 | 0.01 | |||||||||||||
1998 | 0.03 | 0.06 | * | 0.10 | 0.18 | 0.034 | 20 | 0.01 | |||||||||||||
1997 | 0.05 | 0.09 | 0.126 | 0.18 | 0.62 | 0.110 | 26 | 0.01 | |||||||||||||
1996 | 0.06 | 0.14 | 0.280 | 0.39 | 1.3 | 0.268 | 30 | 0.01 | |||||||||||||
1995 | 0.14 | 0.26 | 0.341 | 0.59 | 1.2 | 0.253 | 29 | 0.01 | |||||||||||||
1994 | 0.07 | 0.38 | * | 1.16 | 3.1 | 0.619 | 28 | 0.01 | |||||||||||||
1993 | 0.13 | 0.49 | 0.884 | 1.74 | 3.4 | 0.721 | 27 | 0.01 | |||||||||||||
1992 | 0.35 | 0.84 | 1.36 | 2.24 | 11 | 1.99 | 29 | 0.01 | |||||||||||||
1991 | 0.38 | 0.84 | 1.53 | 2.36 | 11 | 2.07 | 28 | 0.01 | |||||||||||||
1990 | 0.24 | 0.85 | 0.935 | 1.6 | 3.8 | 0.690 | 31 | 0.01 | |||||||||||||
1989 | 0.17 | 0.95 | 1.30 | 2.16 | 6.1 | 1.29 | 22 | 0.01 | |||||||||||||
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. |