CSEMP assessment of CB138 in biota at New Brighton (Mersey)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -9.19 | -6.19 | 7.59 | -15.19 | | | |
| linear | 2 | -11.84 | -5.44 | 9.92 | -19.84 | 4.649 | 1 | 0.0311 |
| smooth (df = 2) | 3 | -12.65 | -0.15 | 11.32 | -22.65 | 2.810 | 1 | 0.0937 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2018 | 0.9269 | 0.3158 | -0.6111 | 0.2343 | -2.608 | 0.0350 |
| last 20 years | 2002 | 2018 | 0.9269 | 0.3158 | -0.6111 | 0.2343 | -2.608 | 0.0350 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.371 | 0.098 | -2.6407 | 0.1384 | -19.082 | 1.0000 |
| EAC | 1.371 | 4.121 | 1.1003 | 0.1384 | 7.950 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
