CSEMP assessment of CB101 in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 6.73 | 8.53 | -0.37 | 0.73 | | | |
| linear | 2 | 4.77 | 8.33 | 1.61 | -3.23 | 3.957 | 1 | 0.0467 |
| smooth (df = 2) | 3 | 6.77 | 13.02 | 1.61 | -3.23 | 0.004 | 1 | 0.9518 |
| smooth (df = 3) | 4 | 8.37 | 18.66 | 1.81 | -3.63 | 0.401 | 1 | 0.5266 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 1.0774 | 0.4797 | -0.5976 | 0.2775 | -2.153 | 0.0543 |
| last 20 years | 2000 | 2018 | 1.0774 | 0.4797 | -0.5976 | 0.2775 | -2.153 | 0.0543 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.6157 | 0.1141 | -2.6504 | 0.1610 | -16.466 | 1.0000 |
| EAC | 1.6157 | 1.5730 | -0.0268 | 0.1610 | -0.166 | 0.5645 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
