CSEMP assessment of CB28 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 | 55.82 | 60.32 | -24.91 | 49.82 | | | |
| linear | 2 | 57.52 | 68.19 | -24.76 | 49.52 | 0.299 | 1 | 0.5844 |
| smooth (df = 2) | 3 | 59.50 | 84.50 | -24.75 | 49.50 | 0.018 | 1 | 0.8945 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -0.17552 | 0.09120 | 0.2667 | 0.4861 | 0.549 | 0.6068 |
| last 20 years | 2005 | 2018 | -0.17552 | 0.09120 | 0.2667 | 0.4861 | 0.549 | 0.6068 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.095 | 0.100 | -2.3938 | 0.2753 | -8.694 | 0.9998 |
| EAC | 1.095 | 13.132 | 2.4839 | 0.2753 | 9.021 | 0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
