CSEMP assessment of CB101 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 | 6.61 | 8.61 | -0.30 | 0.61 | | | |
| linear | 2 | 6.14 | 10.14 | 0.93 | -1.86 | 2.469 | 1 | 0.1161 |
| smooth (df = 2) | 3 | 8.11 | 15.25 | 0.95 | -1.89 | 0.027 | 1 | 0.8688 |
| smooth (df = 3) | 4 | 8.91 | 20.91 | 1.54 | -3.09 | 1.196 | 1 | 0.2742 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 1.0556 | 0.5576 | -0.4980 | 0.3009 | -1.655 | 0.1289 |
| last 20 years | 2000 | 2017 | 1.0556 | 0.5576 | -0.4980 | 0.3009 | -1.655 | 0.1289 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.7464 | 0.1141 | -2.7282 | 0.1778 | -15.348 | 1.0000 |
| EAC | 1.7464 | 1.5730 | -0.1046 | 0.1778 | -0.588 | 0.7153 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
