CSEMP assessment of CB180 in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 133.74 | 135.74 | -63.87 | 127.74 | | | |
| linear | 2 | 135.58 | 139.58 | -63.79 | 127.58 | 0.159 | 1 | 0.6902 |
| smooth (df = 2) | 3 | 130.10 | 137.24 | -60.05 | 120.10 | 7.481 | 1 | 0.0062 |
| smooth (df = 3) | 4 | 131.11 | 143.11 | -59.56 | 119.11 | 0.982 | 1 | 0.3217 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2017 | 1.4086 | 1.5993 | 0.1908 | 0.4774 | 0.400 | 0.6979 |
| last 20 years | 1999 | 2017 | 1.4086 | 1.5993 | 0.1908 | 0.4774 | 0.400 | 0.6979 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 4.95 | 0.11 | -3.807 | 0.289 | -13.162 | 1.0000 |
| EAC | 4.95 | 91.92 | 2.922 | 0.289 | 10.102 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
