CSEMP assessment of CB156 in sediment at Garroch Head (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 64.44 | 67.01 | -29.22 | 58.44 | | | |
| linear | 2 | 66.30 | 71.64 | -29.15 | 58.30 | 0.135 | 1 | 0.7134 |
| smooth (df = 2) | 3 | 66.88 | 76.88 | -28.44 | 56.88 | 1.422 | 1 | 0.2331 |
| smooth (df = 3) | 4 | 68.27 | 86.27 | -28.14 | 56.27 | 0.613 | 1 | 0.4337 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -1.0995 | -1.3904 | -0.2909 | 0.7894 | -0.369 | 0.7220 |
| last 20 years | 2007 | 2018 | -1.0995 | -1.3904 | -0.2909 | 0.7894 | -0.369 | 0.7220 |
Status assessment
No assessment criteria
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
