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 | -1.62 | 1.38 | 3.81 | -7.62 | | | |
| linear | 2 | -4.65 | 1.75 | 6.33 | -12.65 | 5.030 | 1 | 0.0249 |
| smooth (df = 2) | 3 | -2.65 | 9.85 | 6.33 | -12.65 | 0.000 | 1 | 0.9903 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2018 | 0.4492 | -0.2088 | -0.6581 | 0.2501 | -2.631 | 0.0339 |
| last 20 years | 2002 | 2018 | 0.4492 | -0.2088 | -0.6581 | 0.2501 | -2.631 | 0.0339 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.8115 | 0.0978 | -2.1160 | 0.1455 | -14.539 | 1.0000 |
| EAC | 0.8115 | 0.3250 | -0.9151 | 0.1455 | -6.287 | 0.9998 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
