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 | 20.88 | 23.88 | -7.44 | 14.88 | | | |
| linear | 2 | 22.87 | 29.27 | -7.44 | 14.87 | 0.011 | 1 | 0.9157 |
| smooth (df = 2) | 3 | 24.87 | 37.37 | -7.43 | 14.87 | 0.005 | 1 | 0.9424 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2016 | 3.243 | 3.207 | -0.0359 | 0.3394 | -0.106 | 0.9186 |
| last 20 years | 2004 | 2016 | 3.243 | 3.207 | -0.0359 | 0.3394 | -0.106 | 0.9186 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 24.71 | 0.10 | -5.510 | 0.218 | -25.280 | 1.0000 |
| EAC | 24.71 | 310.66 | 2.531 | 0.218 | 11.615 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
