CSEMP assessment of CB118 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 | 84.31 | 86.56 | -39.16 | 78.31 | | | |
| linear | 2 | 83.31 | 87.88 | -37.65 | 75.31 | 3.007 | 1 | 0.0829 |
| smooth (df = 2) | 3 | 80.89 | 89.22 | -35.44 | 70.89 | 4.417 | 1 | 0.0356 |
| smooth (df = 3) | 4 | 82.88 | 97.28 | -35.44 | 70.88 | 0.005 | 1 | 0.9425 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | 0.5955 | 1.1969 | 0.6014 | 0.3251 | 1.850 | 0.0973 |
| last 20 years | 2001 | 2017 | 0.5955 | 1.1969 | 0.6014 | 0.3251 | 1.850 | 0.0973 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 3.31 | 0.10 | -3.499 | 0.187 | -18.726 | 1.0000 |
| EAC | 3.31 | 4.90 | 0.392 | 0.187 | 2.100 | 0.0326 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
