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 | 32.50 | 36.10 | -13.25 | 26.50 | | | |
| linear | 2 | 34.50 | 42.50 | -13.25 | 26.50 | 0.003 | 1 | 0.9532 |
| smooth (df = 2) | 3 | 36.38 | 53.05 | -13.19 | 26.38 | 0.115 | 1 | 0.7345 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2018 | -0.6603 | -0.7025 | -0.0421 | 0.7158 | -0.059 | 0.9550 |
| last 20 years | 2008 | 2018 | -0.6603 | -0.7025 | -0.0421 | 0.7158 | -0.059 | 0.9550 |
Status assessment
No assessment criteria
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
