![]() |
||||||||||||
|
||||||||||||||||||||||||||||||||||
| Year | Months Present |
Minimum | Median | Mean | 90th Percentile |
Maximum | Standard Deviation |
Number of Observations |
Detection Limit |
Estimated Risk |
||||||||||||
| 2002 | 0 | |||||||||||||||||||||
| 2001 | 0 | |||||||||||||||||||||
| 2000 | 0.3 | 1.4 | 0.43 | 5 | 0.2 | |||||||||||||||||
| 1999 | 0.1 | 0.5 | 0.57 | 1.3 | 1.7 | 0.41 | 30 | 0.2 | 53 | |||||||||||||
| 1998 | 0.1 | 0.5 | 0.57 | 1.4 | 1.7 | 0.50 | 31 | 0.2 | 53 | |||||||||||||
| 1997 | 0.1 | 0.5 | 0.56 | 1.2 | 1.9 | 0.47 | 30 | 0.2 | 52 | |||||||||||||
| 1996 | 0.25 | 0.25 | 0.48 | 1.4 | 1.8 | 0.47 | 32 | 0.5 | 44 | |||||||||||||
| 1995 | 0.25 | 1.3 | 1.09 | 2.0 | 3.6 | 0.84 | 30 | 0.5 | 101 | |||||||||||||
| 1994 | 0.25 | 0.9 | 1.08 | 2.0 | 3.6 | 0.82 | 32 | 0.5 | 100 | |||||||||||||
| 1993 | 0.25 | 0.9 | 1.13 | 2.8 | 3.1 | 1.03 | 30 | 0.5 | 105 | |||||||||||||
| 1992 | 0.25 | 1.2 | 1.41 | 2.8 | 4.8 | 1.11 | 31 | 0.5 | 130 | |||||||||||||
| 1991 | 0.25 | 1.0 | 1.58 | 3.5 | 4.9 | 1.36 | 29 | 0.5 | 147 | |||||||||||||
| 1990 | 0.25 | 1.5 | 1.84 | 3.6 | 4.3 | 1.26 | 28 | 0.5 | 171 | |||||||||||||
| 1989 | 0.25 | 1.8 | 2.14 | 4.1 | 4.8 | 1.46 | 23 | 0.5 | 198 |
| 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. Risks shown only for those substances with unit risk factors. |
||