CSEMP assessment of CB138 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 20.84 | 25.34 | -7.42 | 14.84 | | | |
| linear | 2 | 22.41 | 33.07 | -7.20 | 14.41 | 0.429 | 1 | 0.5123 |
| smooth (df = 2) | 3 | 24.14 | 49.14 | -7.07 | 14.14 | 0.269 | 1 | 0.6037 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2013 | -2.1701 | -2.3781 | -0.20808 | 0.31286 | -0.665 | 0.5354 |
| last 20 years | 2005 | 2013 | -2.1701 | -2.3781 | -0.20808 | 0.31286 | -0.665 | 0.5354 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.093 | 0.150 | 0.481 | 0.186 | 2.592 | 0.0244 |
| EAC | 0.093 | 7.900 | 4.445 | 0.186 | 23.954 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
