CSEMP assessment of CB180 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 | 47.27 | 49.84 | -20.64 | 41.27 | | | |
| linear | 2 | 49.10 | 54.43 | -20.55 | 41.10 | 0.173 | 1 | 0.6773 |
| smooth (df = 2) | 3 | 47.34 | 57.34 | -18.67 | 37.34 | 3.759 | 1 | 0.0525 |
| smooth (df = 3) | 4 | 48.74 | 66.74 | -18.37 | 36.74 | 0.595 | 1 | 0.4405 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2018 | 2.5110 | 2.3492 | -0.1618 | 0.3870 | -0.418 | 0.6869 |
| last 20 years | 2004 | 2018 | 2.5110 | 2.3492 | -0.1618 | 0.3870 | -0.418 | 0.6869 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 10.48 | 0.11 | -4.556 | 0.249 | -18.294 | 1.0000 |
| EAC | 10.48 | 91.92 | 2.172 | 0.249 | 8.719 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
