CSEMP assessment of CB180 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 49.07 | 52.67 | -21.54 | 43.07 | | | |
| linear | 2 | 44.67 | 52.67 | -18.33 | 36.67 | 6.403 | 1 | 0.0114 |
| smooth (df = 2) | 3 | 46.13 | 62.80 | -18.07 | 36.13 | 0.535 | 1 | 0.4644 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -2.705 | -3.866 | -1.1601 | 0.4006 | -2.896 | 0.0275 |
| last 20 years | 2005 | 2018 | -2.705 | -3.866 | -1.1601 | 0.4006 | -2.896 | 0.0275 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.021 | 0.100 | 1.563 | 0.244 | 6.415 | 0.0003 |
| EAC | 0.021 | 12.000 | 6.350 | 0.244 | 26.065 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
