|
|
|
|||||||||
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
||||||||||||||||||||||||||||||
 |
|||||||||||||||||||||||||||||||
|
| Read About Estimated Risk |
|
| Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
Estimated Risk |
||||||||||||
| 2025 |
|
0.5 | 2.6 | * | 5.1 | 5.7 | 1.47 | 15 | 0.1 | * | ||||||||||||
| 2024 |
|
0.9 | 3.4 | 3.82 | 6.8 | 7.6 | 1.81 | 30 | 0.1 | 80 | ||||||||||||
| 2023 |
|
0.6 | 2.5 | 3.08 | 6.5 | 7.3 | 2.03 | 28 | 0.1 | 65 | ||||||||||||
| 2022 |
|
0.05 | 3.1 | 3.45 | 6.2 | 7.5 | 1.82 | 31 | 0.1 | 72 | ||||||||||||
| 2021 |
|
1.5 | 3.6 | * | 5.2 | 9.9 | 2.10 | 15 | 0.1 | * | ||||||||||||
| 2020 |
|
1.6 | * | * | * | 3.6 | 0.76 | 6 | 0.1 | * | ||||||||||||
| 2019 |
|
1.1 | 3.0 | 3.19 | 5.9 | 7.6 | 1.78 | 28 | 0.1 | 67 | ||||||||||||
| 2018 |
|
1.1 | 3.9 | 4.21 | 7.0 | 11 | 2.46 | 29 | 0.1 | 88 | ||||||||||||
| 2017 |
|
0.2 | 3.0 | 3.35 | 6.4 | 7.4 | 1.82 | 30 | 0.1 | 70 | ||||||||||||
| 2016 |
|
0.3 | 3.8 | 3.64 | 5.8 | 7.7 | 1.93 | 28 | 0.1 | 76 | ||||||||||||
| 2015 |
|
1.5 | 3.4 | 3.52 | 5.2 | 6.7 | 1.32 | 29 | 0.1 | 74 | ||||||||||||
| 2014 |
|
1.1 | 3.9 | 3.56 | 5.3 | 6.5 | 1.56 | 30 | 0.1 | 75 | ||||||||||||
| 2013 |
|
1.1 | 3.5 | 3.57 | 5.5 | 7.5 | 1.61 | 33 | 0.1 | 75 | ||||||||||||
| 2012 |
|
0.5 | 3.5 | 3.70 | 6.5 | 9.4 | 2.03 | 30 | 0.1 | 78 | ||||||||||||
| 2011 |
|
0.7 | 2.7 | 3.05 | 5.8 | 7.6 | 1.91 | 31 | 0.1 | 64 | ||||||||||||
| 2010 |
|
0.6 | 3.7 | 3.44 | 5.0 | 9.0 | 1.77 | 29 | 0.1 | 72 | ||||||||||||
| 2009 |
|
0.4 | 2.9 | 3.12 | 4.9 | 7.9 | 1.77 | 31 | 0.1 | 65 | ||||||||||||
| 2008 |
|
0.7 | 2.5 | 2.88 | 5.4 | 7.1 | 1.72 | 28 | 0.1 | 61 | ||||||||||||
| 2007 |
|
0.4 | 2.9 | 2.88 | 4.9 | 6.9 | 1.60 | 31 | 0.1 | 60 | ||||||||||||
| 2006 |
|
0.7 | 2.2 | 2.55 | 4.1 | 6.8 | 1.50 | 28 | 0.1 | 54 | ||||||||||||
| 2005 |
|
0.6 | 3.4 | 3.47 | 5.9 | 6.5 | 1.83 | 29 | 0.1 | 73 | ||||||||||||
| 2004 |
|
1.0 | 3.1 | 3.46 | 5.8 | 11 | 2.18 | 30 | 0.1 | 73 | ||||||||||||
| 2003 |
|
0.7 | 3.3 | 4.18 | 6.1 | 12 | 2.86 | 31 | 0.1 | 88 | ||||||||||||
| 2002 |
|
1.0 | 3.7 | 4.36 | 8.2 | 10 | 2.47 | 31 | 0.1 | 92 | ||||||||||||
| 2001 |
|
0.3 | 4.0 | 4.73 | 6.6 | 24 | 4.25 | 29 | 0.1 | 99 | ||||||||||||
| 2000 |
|
0.7 | 2.9 | 3.17 | 5.0 | 5.8 | 1.37 | 31 | 0.1 | 67 | ||||||||||||
| 1999 |
|
0.3 | 4.1 | 3.55 | 5.8 | 8.1 | 2.06 | 30 | 0.1 | 75 | ||||||||||||
| 1998 |
|
0.5 | 3.7 | * | 6.9 | 10 | 2.45 | 17 | 0.1 | * | ||||||||||||
| 1997 |
|
1.7 | * | * | * | 1.7 | 2.25 | 1 | 0.1 | * | ||||||||||||
| 1996 |
|
1.5 | 4.2 | 4.15 | 7.9 | 9.0 | 2.25 | 29 | 0.1 | 87 | ||||||||||||
| 1995 |
|
0.4 | 2.5 | 2.65 | 4.7 | 8.8 | 1.75 | 32 | 0.1 | 56 | ||||||||||||
| 1994 |
|
0.2 | 2.4 | 2.50 | 3.5 | 4.8 | 1.00 | 30 | 0.1 | 52 | ||||||||||||
| 1993 |
|
0.05 | 2.3 | 2.73 | 5.0 | 6.6 | 1.70 | 30 | 0.1 | 57 | ||||||||||||
| 1992 |
|
0.1 | 1.2 | 1.53 | 2.9 | 4.6 | 1.05 | 30 | 0.1 | 32 | ||||||||||||
| 1991 |
|
0.2 | 2.0 | 2.70 | 3.8 | 20 | 3.39 | 31 | 0.1 | 57 | ||||||||||||
| 1990 |
|
0.2 | 1.4 | 1.75 | 3.9 | 5.5 | 1.39 | 31 | 0.1 | 37 | ||||||||||||
| 1989 |
|
0.4 | 2.9 | 3.05 | 6.2 | 11 | 2.39 | 49 | 0.1 | 64 | ||||||||||||
|
||||||||||||||||||||||
 |
||||||||||||||||||||||
|
|
|
|
| 1989-1995 data and 1996-2025 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. |
 |
