Table 3

Number of samples according to percentile categoriesa of measured and modeled PCE concentrations


Measured PCE concentration



≤ 50th percentile
> 50–75th percentile
> 75th percentile
Total

Model estimated PCE concentration
≤ 50th percentile
28
10
6
44

> 50–75th percentile
12
7
3
22

> 75th percentile
5
4
13
22


Total
45
21
22
88

a 207 μg/L and 657 ug/L were the 50th and 75th percentile modeled PCE concentrations, respectively. 0.5 μg/L and 32 ug/L were the 50th and 75th percentile measured PCE concentrations, respectively.

Spence et al. Environmental Health 2008 7:24   doi:10.1186/1476-069X-7-24