CSEMP assessment of CB138 in biota at Tynemouth
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 17.93 | 20.93 | -6.97 | 13.93 | | | |
| linear | 2 | 19.84 | 27.84 | -6.92 | 13.84 | 0.098 | 1 | 0.7547 |
| smooth (df = 2) | 3 | 20.12 | 40.12 | -6.06 | 12.12 | 1.713 | 1 | 0.1906 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2009 | 2018 | -0.4308 | -0.6808 | -0.2500 | 0.7966 | -0.314 | 0.7663 |
| last 20 years | 2009 | 2018 | -0.4308 | -0.6808 | -0.2500 | 0.7966 | -0.314 | 0.7663 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.506 | 0.098 | -1.6440 | 0.4900 | -3.355 | 0.9899 |
| EAC | 0.506 | 4.121 | 2.0969 | 0.4900 | 4.279 | 0.0039 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
