CSEMP assessment of CB153 in sediment at Sea of Hebrides
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 164.29 | 166.29 | -79.14 | 158.29 | | | |
| linear | 2 | 163.30 | 167.30 | -77.65 | 155.30 | 2.983 | 1 | 0.0841 |
| smooth (df = 2) | 3 | 165.27 | 172.41 | -77.63 | 155.27 | 0.038 | 1 | 0.8460 |
| smooth (df = 3) | 4 | 165.83 | 177.83 | -76.91 | 153.83 | 1.440 | 1 | 0.2301 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -1.7612 | -1.1945 | 0.5667 | 0.3073 | 1.844 | 0.0949 |
| last 20 years | 2007 | 2018 | -1.7612 | -1.1945 | 0.5667 | 0.3073 | 1.844 | 0.0949 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.30 | 0.19 | -0.466 | 0.186 | -2.500 | 0.9843 |
| EAC | 0.30 | 40.00 | 4.883 | 0.186 | 26.186 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
