CSEMP assessment of CB153 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 | 23.94 | 26.52 | -8.97 | 17.94 | | | |
| linear | 2 | 25.86 | 31.19 | -8.93 | 17.86 | 0.084 | 1 | 0.7723 |
| smooth (df = 2) | 3 | 27.86 | 37.86 | -8.93 | 17.86 | 0.001 | 1 | 0.9751 |
| smooth (df = 3) | 4 | 29.42 | 47.42 | -8.71 | 17.42 | 0.438 | 1 | 0.5081 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2018 | 3.255 | 3.166 | -0.08941 | 0.30837 | -0.290 | 0.7792 |
| last 20 years | 2004 | 2018 | 3.255 | 3.166 | -0.08941 | 0.30837 | -0.290 | 0.7792 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 23.71 | 0.10 | -5.469 | 0.198 | -27.552 | 1.0000 |
| EAC | 23.71 | 310.66 | 2.573 | 0.198 | 12.962 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
