CSEMP assessment of CB180 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 | 29.82 | 34.32 | -11.91 | 23.82 | | | |
| linear | 2 | 31.32 | 41.99 | -11.66 | 23.32 | 0.498 | 1 | 0.4804 |
| smooth (df = 2) | 3 | 33.27 | 58.27 | -11.64 | 23.27 | 0.049 | 1 | 0.8242 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2013 | -3.0894 | -2.8451 | 0.2443 | 0.3253 | 0.751 | 0.4866 |
| last 20 years | 2005 | 2013 | -3.0894 | -2.8451 | 0.2443 | 0.3253 | 0.751 | 0.4866 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.058 | 0.100 | 0.543 | 0.185 | 2.927 | 0.0164 |
| EAC | 0.058 | 12.000 | 5.330 | 0.185 | 28.752 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
