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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