CSEMP assessment of CB101 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 | 103.37 | 104.57 | -48.69 | 97.37 | | | |
| linear | 2 | 104.37 | 106.66 | -48.19 | 96.37 | 1.003 | 1 | 0.3165 |
| smooth (df = 2) | 3 | 104.91 | 108.75 | -47.45 | 94.91 | 1.465 | 1 | 0.2261 |
| smooth (df = 3) | 4 | 105.02 | 111.02 | -46.51 | 93.02 | 1.888 | 1 | 0.1694 |
| smooth (df = 4) | 5 | 105.36 | 114.27 | -45.68 | 91.36 | 1.658 | 1 | 0.1978 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 1.0531 | 0.5332 | -0.5199 | 0.5163 | -1.007 | 0.3290 |
| last 20 years | 2000 | 2018 | 1.0531 | 0.5332 | -0.5199 | 0.5163 | -1.007 | 0.3290 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.7044 | 0.1400 | -2.4993 | 0.3364 | -7.430 | 1.0000 |
| EAC | 1.7044 | 3.0000 | 0.5654 | 0.3364 | 1.681 | 0.0561 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
