CSEMP assessment of CB153 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 | 52.38 | 54.18 | -23.19 | 46.38 | | | |
| linear | 2 | 54.38 | 57.94 | -23.19 | 46.38 | 0.003 | 1 | 0.9591 |
| smooth (df = 2) | 3 | 55.39 | 61.64 | -22.70 | 45.39 | 0.989 | 1 | 0.3200 |
| smooth (df = 3) | 4 | 52.96 | 63.25 | -20.48 | 40.96 | 4.430 | 1 | 0.0353 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2013 | 0.7266 | 0.7436 | 0.017 | 0.331 | 0.051 | 0.9599 |
| last 20 years | 2000 | 2013 | 0.7266 | 0.7436 | 0.017 | 0.331 | 0.051 | 0.9599 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 2.10 | 0.19 | -2.4043 | 0.1988 | -12.093 | 1.0000 |
| EAC | 2.10 | 40.00 | 2.9453 | 0.1988 | 14.814 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
