CSEMP assessment of CB118 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 | 3.22 | 6.82 | 1.39 | -2.78 | | | |
| linear | 2 | 0.95 | 8.95 | 3.52 | -7.05 | 4.264 | 1 | 0.0389 |
| smooth (df = 2) | 3 | 2.94 | 19.60 | 3.53 | -7.06 | 0.018 | 1 | 0.8924 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 0.4597 | -0.2070 | -0.6667 | 0.2802 | -2.379 | 0.0548 |
| last 20 years | 2002 | 2017 | 0.4597 | -0.2070 | -0.6667 | 0.2802 | -2.379 | 0.0548 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.8130 | 0.0978 | -2.1178 | 0.1696 | -12.488 | 1.0000 |
| EAC | 0.8130 | 0.3250 | -0.9169 | 0.1696 | -5.407 | 0.9992 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
