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 | 43.33 | 46.33 | -18.66 | 37.33 | | | |
| linear | 2 | 44.68 | 51.08 | -18.34 | 36.68 | 0.647 | 1 | 0.4212 |
| smooth (df = 2) | 3 | 44.09 | 56.59 | -17.05 | 34.09 | 2.589 | 1 | 0.1076 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2016 | 2.5709 | 2.2333 | -0.3376 | 0.4124 | -0.819 | 0.4400 |
| last 20 years | 2004 | 2016 | 2.5709 | 2.2333 | -0.3376 | 0.4124 | -0.819 | 0.4400 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 9.33 | 0.11 | -4.441 | 0.265 | -16.766 | 1.0000 |
| EAC | 9.33 | 91.92 | 2.288 | 0.265 | 8.637 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
