|
|||||||||||||||||||||||||||||||
Read About Estimated Risk |
Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
Estimated Risk |
||||||||||||
2023 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
2022 | 1.2 | 3.3 | * | 5.8 | 9.1 | 1.83 | 23 | 0.1 | * | |||||||||||||
2021 | 0.8 | 4.1 | * | 6.1 | 8.7 | 1.91 | 16 | 0.1 | * | |||||||||||||
2020 | 1.1 | * | * | * | 3.3 | 1.01 | 5 | 0.1 | * | |||||||||||||
2019 | 0.6 | 2.9 | 3.25 | 6.2 | 7.0 | 1.80 | 31 | 0.1 | 68 | |||||||||||||
2018 | 1.0 | 4.0 | 4.03 | 6.8 | 9.8 | 2.21 | 30 | 0.1 | 85 | |||||||||||||
2017 | 1.1 | 3.3 | 3.87 | 7.4 | 9.1 | 2.04 | 30 | 0.1 | 81 | |||||||||||||
2016 | 1.5 | 4.3 | 4.18 | 7.0 | 8.8 | 2.04 | 31 | 0.1 | 88 | |||||||||||||
2015 | 1.1 | 3.5 | 3.62 | 5.8 | 7.5 | 1.46 | 30 | 0.1 | 76 | |||||||||||||
2014 | 0.9 | 3.6 | 3.58 | 5.6 | 6.0 | 1.62 | 30 | 0.1 | 75 | |||||||||||||
2013 | 0.6 | 2.9 | 3.16 | 5.3 | 7.4 | 1.59 | 31 | 0.1 | 66 | |||||||||||||
2012 | 0.8 | 3.4 | 3.33 | 5.8 | 7.2 | 1.75 | 30 | 0.1 | 70 | |||||||||||||
2011 | 0.7 | 2.7 | 3.01 | 4.9 | 6.5 | 1.55 | 28 | 0.1 | 63 | |||||||||||||
2010 | 0.1 | 2.7 | 2.64 | 3.8 | 6.4 | 1.42 | 27 | 0.1 | 55 | |||||||||||||
2009 | 0.5 | 2.9 | 3.21 | 5.6 | 9.1 | 1.96 | 30 | 0.1 | 67 | |||||||||||||
2008 | 0.4 | 2.6 | 3.00 | 5.4 | 6.5 | 1.72 | 30 | 0.1 | 63 | |||||||||||||
2007 | 0.8 | 2.8 | 2.94 | 5.2 | 5.9 | 1.40 | 30 | 0.1 | 62 | |||||||||||||
2006 | 0.7 | 2.0 | * | 3.9 | 5.4 | 1.17 | 21 | 0.1 | * | |||||||||||||
2005 | 0.4 | 3.4 | 3.62 | 6.1 | 6.8 | 1.98 | 28 | 0.1 | 76 | |||||||||||||
2004 | 0.7 | 2.7 | 3.04 | 6.1 | 7.2 | 1.98 | 30 | 0.1 | 64 | |||||||||||||
2003 | 1.0 | 3.0 | 3.45 | 6.1 | 7.2 | 1.86 | 25 | 0.1 | 73 | |||||||||||||
2002 | 1.0 | 3.1 | * | 6.7 | 7.5 | 1.92 | 21 | 0.1 | * | |||||||||||||
2001 | 0.2 | 4.0 | 3.80 | 5.7 | 18 | 3.26 | 28 | 0.1 | 80 | |||||||||||||
2000 | 1.1 | 3.1 | 3.05 | 4.8 | 5.5 | 1.28 | 28 | 0.1 | 64 | |||||||||||||
1999 | 1.5 | * | * | * | 1.5 | 0.56 | 1 | 0.1 | * | |||||||||||||
1998 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1997 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1996 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1995 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1994 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1993 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1992 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1991 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1990 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1989 | * | * | * | * | * | * | 0 | * | * | |||||||||||||
1989-1995 data and 1996-2023 data represent different methods and should not be compared. | |||
See Report on a Parallel Carbonyl Monitoring Study Using C18 and Silica Gel Sampling Media for details. | |||
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. |