CSEMP assessment of CB118 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 | 27.71 | 29.96 | -10.86 | 21.71 | | | |
| linear | 2 | 24.25 | 28.82 | -8.13 | 16.25 | 5.460 | 1 | 0.0195 |
| smooth (df = 2) | 3 | 26.15 | 34.48 | -8.07 | 16.15 | 0.105 | 1 | 0.7458 |
| smooth (df = 3) | 4 | 27.87 | 42.27 | -7.94 | 15.87 | 0.275 | 1 | 0.5998 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 0.9065 | -0.0023 | -0.9088 | 0.3417 | -2.659 | 0.0261 |
| last 20 years | 2000 | 2018 | 0.9065 | -0.0023 | -0.9088 | 0.3417 | -2.659 | 0.0261 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.9977 | 0.0978 | -2.3225 | 0.2024 | -11.475 | 1.0000 |
| EAC | 0.9977 | 0.3250 | -1.1216 | 0.2024 | -5.542 | 0.9998 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
