CSEMP assessment of CB153 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 75.08 | 77.33 | -34.54 | 69.08 | | | |
| linear | 2 | 76.89 | 81.46 | -34.44 | 68.89 | 0.190 | 1 | 0.6630 |
| smooth (df = 2) | 3 | 78.89 | 87.22 | -34.44 | 68.89 | 0.000 | 1 | 0.9979 |
| smooth (df = 3) | 4 | 72.85 | 87.25 | -30.42 | 60.85 | 8.044 | 1 | 0.0046 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | 2.3684 | 2.1866 | -0.1817 | 0.4153 | -0.438 | 0.6720 |
| last 20 years | 2001 | 2017 | 2.3684 | 2.1866 | -0.1817 | 0.4153 | -0.438 | 0.6720 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 8.91 | 0.10 | -4.489 | 0.240 | -18.699 | 1.0000 |
| EAC | 8.91 | 310.66 | 3.552 | 0.240 | 14.795 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
