CSEMP assessment of CB138 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 | 10.56 | 14.16 | -2.28 | 4.56 | | | |
| linear | 2 | 10.77 | 18.77 | -1.39 | 2.77 | 1.784 | 1 | 0.1816 |
| smooth (df = 2) | 3 | 11.79 | 28.45 | -0.89 | 1.79 | 0.988 | 1 | 0.3203 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2014 | 3.173 | 2.721 | -0.4524 | 0.3204 | -1.412 | 0.2077 |
| last 20 years | 2004 | 2014 | 3.173 | 2.721 | -0.4524 | 0.3204 | -1.412 | 0.2077 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 15.20 | 0.09 | -5.129 | 0.205 | -25.034 | 1.0000 |
| EAC | 15.20 | 62.13 | 1.408 | 0.205 | 6.873 | 0.0002 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
