CSEMP assessment of CB52 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 | 118.81 | 122.41 | -56.41 | 112.81 | | | |
| linear | 2 | 120.81 | 128.81 | -56.40 | 112.81 | 0.005 | 1 | 0.9438 |
| smooth (df = 2) | 3 | 117.36 | 134.02 | -53.68 | 107.36 | 5.449 | 1 | 0.0196 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -2.0113 | -1.9398 | 0.0714 | 0.9818 | 0.073 | 0.9444 |
| last 20 years | 2006 | 2018 | -2.0113 | -1.9398 | 0.0714 | 0.9818 | 0.073 | 0.9444 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1437 | 0.1200 | -0.1804 | 0.6008 | -0.300 | 0.6130 |
| EAC | 0.1437 | 2.7000 | 2.9331 | 0.6008 | 4.882 | 0.0014 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
