CSEMP assessment of CB153 in biota at New Brighton (Mersey)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -32.06 | -29.81 | 19.03 | -38.06 | | | |
| linear | 2 | -34.06 | -29.49 | 21.03 | -42.06 | 4.009 | 1 | 0.0453 |
| smooth (df = 2) | 3 | -32.46 | -24.12 | 21.23 | -42.46 | 0.393 | 1 | 0.5307 |
| smooth (df = 3) | 4 | -30.82 | -16.42 | 21.41 | -42.82 | 0.359 | 1 | 0.5493 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2018 | 1.2892 | 0.9357 | -0.3535 | 0.1571 | -2.251 | 0.0510 |
| last 20 years | 2002 | 2018 | 1.2892 | 0.9357 | -0.3535 | 0.1571 | -2.251 | 0.0510 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 2.549 | 0.098 | -3.261 | 0.089 | -36.803 | 1.0000 |
| EAC | 2.549 | 20.605 | 2.090 | 0.089 | 23.588 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
