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Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
||||||||||||
2024 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2023 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2022 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2021 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2020 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2019 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2018 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2017 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2016 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2015 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2014 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2013 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
2012 |
|
0.01 | * | * | * | 0.01 | 0.004 | 1 | 0.01 | ||||||||||||
2011 |
|
0.005 | 0.005 | 0.008 | 0.01 | 0.02 | 0.004 | 30 | 0.01 | ||||||||||||
2010 |
|
0.005 | 0.01 | 0.008 | 0.01 | 0.01 | 0.003 | 30 | 0.01 | ||||||||||||
2009 |
|
0.005 | 0.01 | 0.010 | 0.01 | 0.02 | 0.003 | 32 | 0.01 | ||||||||||||
2008 |
|
0.01 | 0.01 | 0.012 | 0.02 | 0.02 | 0.004 | 31 | 0.01 | ||||||||||||
2007 |
|
0.01 | 0.01 | 0.014 | 0.02 | 0.02 | 0.005 | 29 | 0.01 | ||||||||||||
2006 |
|
0.01 | 0.02 | 0.020 | 0.02 | 0.02 | 0.002 | 31 | 0.01 | ||||||||||||
2005 |
|
0.02 | 0.02 | 0.020 | 0.02 | 0.03 | 0.002 | 34 | 0.01 | ||||||||||||
2004 |
|
0.02 | 0.02 | 0.025 | 0.03 | 0.03 | 0.005 | 30 | 0.01 | ||||||||||||
2003 |
|
0.02 | 0.03 | 0.034 | 0.04 | 0.06 | 0.008 | 31 | 0.01 | ||||||||||||
2002 |
|
0.03 | 0.04 | 0.039 | 0.04 | 0.05 | 0.005 | 31 | 0.01 | ||||||||||||
2001 |
|
0.02 | 0.04 | 0.055 | 0.05 | 0.59 | 0.101 | 30 | 0.01 | ||||||||||||
2000 |
|
0.04 | 0.05 | 0.068 | 0.12 | 0.20 | 0.038 | 30 | 0.01 | ||||||||||||
1999 |
|
0.05 | 0.05 | * | 0.06 | 0.10 | 0.014 | 12 | 0.01 | ||||||||||||
1998 |
|
0.04 | 0.06 | * | 0.11 | 0.15 | 0.029 | 15 | 0.01 | ||||||||||||
1997 |
|
0.05 | 0.08 | 0.078 | 0.09 | 0.17 | 0.023 | 29 | 0.01 | ||||||||||||
1996 |
|
0.07 | 0.09 | 0.095 | 0.13 | 0.18 | 0.029 | 31 | 0.01 | ||||||||||||
1995 |
|
0.10 | 0.14 | 0.157 | 0.22 | 0.34 | 0.058 | 30 | 0.01 | ||||||||||||
1994 |
|
0.05 | 0.17 | 0.871 | 0.88 | 16 | 2.95 | 31 | 0.01 | ||||||||||||
1993 |
|
0.13 | 0.37 | 0.830 | 1.86 | 5.4 | 1.15 | 29 | 0.01 | ||||||||||||
1992 |
|
0.26 | 0.50 | 0.531 | 0.71 | 2.0 | 0.308 | 30 | 0.01 | ||||||||||||
1991 |
|
0.23 | 0.48 | 0.620 | 1.02 | 2.8 | 0.493 | 30 | 0.01 | ||||||||||||
1990 |
|
0.21 | 0.40 | * | 0.93 | 2.4 | 0.461 | 24 | 0.01 | ||||||||||||
1989 |
|
* | * | * | * | * | * | 0 | * | ||||||||||||
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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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