CSEMP assessment of CB138 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 | -5.71 | -2.11 | 5.85 | -11.71 | | | |
| linear | 2 | -6.88 | 1.12 | 7.44 | -14.88 | 3.168 | 1 | 0.0751 |
| smooth (df = 2) | 3 | -8.68 | 7.99 | 9.34 | -18.68 | 3.802 | 1 | 0.0512 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 0.9146 | 0.3715 | -0.5431 | 0.2674 | -2.031 | 0.0885 |
| last 20 years | 2002 | 2017 | 0.9146 | 0.3715 | -0.5431 | 0.2674 | -2.031 | 0.0885 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.450 | 0.098 | -2.6963 | 0.1631 | -16.532 | 1.0000 |
| EAC | 1.450 | 4.121 | 1.0446 | 0.1631 | 6.405 | 0.0003 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
