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Table 3 Type I and type II errors (0 = correct; 1 = error; the third and sixth columns report whether the prediction of EQS exceedance was correct, i.e., 0, or erroneous, i.e., 1) in scenario #2: variant using a single field campaign with caged gammarids, and the median slope of the regression between fillet and whole-body concentrations

From: Monitoring priority substances in biota under the Water Framework Directive: how effective is a tiered approach based on caged invertebrates? A proof-of-concept study targeting PFOS in French rivers

Site TMF75 TMF50
Err. I Err. II Overall Err. I Err. II Overall
01 0 1 1 0 1 1
02 0 0 0 0 0 0
03 0 0 0 0 1 1
04 0 0 0 0 0 0
05 0 0 0 0 0 0
06 0 0 0 0 0 0
07 0 1 1 0 1 1
08 0 0 0 0 0 0
09 0 1 1 0 1 1
10 1 0 1 0 0 0
11 0 0 0 0 0 0
12 0 1 1 0 1 1
13 0 0 0 0 0 0
14 0 0 0 0 0 0
15 0 0 0 0 0 0
Total 1 4 5 0 5 5