CSEMP assessment of CB52 in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 59.09 | 65.09 | -26.54 | 53.09 | | | |
| linear | 2 | 58.74 | 74.74 | -25.37 | 50.74 | 2.350 | 1 | 0.1253 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2018 | 0.0463 | -0.9096 | -0.9558 | 0.5333 | -1.792 | 0.1475 |
| last 20 years | 2008 | 2018 | 0.0463 | -0.9096 | -0.9558 | 0.5333 | -1.792 | 0.1475 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.403 | 0.080 | -1.616 | 0.339 | -4.761 | 0.9956 |
| EAC | 0.403 | 21.168 | 3.962 | 0.339 | 11.671 | 0.0002 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
