CSEMP assessment of CB156 in sediment at Holy Loch (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 30.98 | 35.48 | -12.49 | 24.98 | | | |
| linear | 2 | 32.95 | 43.62 | -12.48 | 24.95 | 0.031 | 1 | 0.8603 |
| smooth (df = 2) | 3 | 34.63 | 59.63 | -12.31 | 24.63 | 0.324 | 1 | 0.5690 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2017 | -0.7031 | -0.5578 | 0.1452 | 0.8226 | 0.177 | 0.8668 |
| last 20 years | 2008 | 2017 | -0.7031 | -0.5578 | 0.1452 | 0.8226 | 0.177 | 0.8668 |
Status assessment
No assessment criteria
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
