CSEMP assessment of CB101 in sediment at Skelmorlie (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 91.88 | 93.68 | -42.94 | 85.88 | | | |
| linear | 2 | 93.40 | 96.95 | -42.70 | 85.40 | 0.481 | 1 | 0.4879 |
| smooth (df = 2) | 3 | 95.34 | 101.59 | -42.67 | 85.34 | 0.060 | 1 | 0.8060 |
| smooth (df = 3) | 4 | 91.17 | 101.46 | -39.59 | 79.17 | 6.161 | 1 | 0.0131 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2013 | 0.3335 | -0.0264 | -0.3598 | 0.5138 | -0.700 | 0.4982 |
| last 20 years | 2000 | 2013 | 0.3335 | -0.0264 | -0.3598 | 0.5138 | -0.700 | 0.4982 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.974 | 0.140 | -1.9397 | 0.3055 | -6.349 | 1.0000 |
| EAC | 0.974 | 3.000 | 1.1250 | 0.3055 | 3.682 | 0.0018 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
