CSEMP assessment of CB138 in biota at West Dogger
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 88.50 | 91.08 | -41.25 | 82.50 | | | |
| linear | 2 | 88.71 | 94.05 | -40.36 | 80.71 | 1.790 | 1 | 0.1809 |
| smooth (df = 2) | 3 | 83.87 | 93.87 | -36.94 | 73.87 | 6.842 | 1 | 0.0089 |
| smooth (df = 3) | 4 | 85.50 | 103.50 | -36.75 | 73.50 | 0.373 | 1 | 0.5412 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2013 | 2.8595 | 2.1702 | -0.6892 | 0.4931 | -1.398 | 0.1998 |
| last 20 years | 1999 | 2013 | 2.8595 | 2.1702 | -0.6892 | 0.4931 | -1.398 | 0.1998 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 8.76 | 0.09 | -4.578 | 0.282 | -16.220 | 1.0000 |
| EAC | 8.76 | 62.13 | 1.959 | 0.282 | 6.941 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
