CSEMP assessment of CB138 in biota at South Eddystone
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -2.53 | 1.97 | 4.26 | -8.53 | | | |
| linear | 2 | -5.87 | 4.80 | 6.93 | -13.87 | 5.344 | 1 | 0.0208 |
| smooth (df = 2) | 3 | -3.97 | 21.03 | 6.99 | -13.97 | 0.104 | 1 | 0.7474 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2014 | 2.5582 | 1.9433 | -0.6149 | 0.2162 | -2.845 | 0.0361 |
| last 20 years | 2005 | 2014 | 2.5582 | 1.9433 | -0.6149 | 0.2162 | -2.845 | 0.0361 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 6.98 | 0.09 | -4.351 | 0.137 | -31.758 | 1.0000 |
| EAC | 6.98 | 62.13 | 2.186 | 0.137 | 15.954 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
