CSEMP assessment of CB138 in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 61.82 | 64.40 | -27.91 | 55.82 | | | |
| linear | 2 | 61.75 | 67.08 | -26.87 | 53.75 | 2.074 | 1 | 0.1498 |
| smooth (df = 2) | 3 | 63.42 | 73.42 | -26.71 | 53.42 | 0.332 | 1 | 0.5644 |
| smooth (df = 3) | 4 | 64.36 | 82.36 | -26.18 | 52.36 | 1.056 | 1 | 0.3040 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2013 | 2.5375 | 2.9236 | 0.3861 | 0.2541 | 1.520 | 0.1671 |
| last 20 years | 1999 | 2013 | 2.5375 | 2.9236 | 0.3861 | 0.2541 | 1.520 | 0.1671 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 18.61 | 0.09 | -5.332 | 0.151 | -35.204 | 1.0000 |
| EAC | 18.61 | 62.13 | 1.206 | 0.151 | 7.961 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
