CSEMP assessment of CB153 in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -12.48 | -10.48 | 9.24 | -18.48 | | | |
| linear | 2 | -13.55 | -9.55 | 10.77 | -21.55 | 3.069 | 1 | 0.0798 |
| smooth (df = 2) | 3 | -12.56 | -5.42 | 11.28 | -22.56 | 1.013 | 1 | 0.3141 |
| smooth (df = 3) | 4 | -10.61 | 1.39 | 11.31 | -22.61 | 0.055 | 1 | 0.8148 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 1.6001 | 1.2410 | -0.3591 | 0.1904 | -1.886 | 0.0887 |
| last 20 years | 2000 | 2017 | 1.6001 | 1.2410 | -0.3591 | 0.1904 | -1.886 | 0.0887 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 3.459 | 0.098 | -3.566 | 0.111 | -32.048 | 1.0000 |
| EAC | 3.459 | 20.605 | 1.785 | 0.111 | 16.039 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
