CSEMP assessment of CB52 in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 75.24 | 79.74 | -34.62 | 69.24 | | | |
| linear | 2 | 76.13 | 86.80 | -34.07 | 68.13 | 1.108 | 1 | 0.2925 |
| smooth (df = 2) | 3 | 61.52 | 86.52 | -25.76 | 51.52 | 16.611 | 1 | <0.0001 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -2.3413 | -0.8723 | 1.4690 | 1.2894 | 1.139 | 0.3062 |
| last 20 years | 2007 | 2018 | -2.3413 | -0.8723 | 1.4690 | 1.2894 | 1.139 | 0.3062 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.418 | 0.120 | -1.2479 | 0.7821 | -1.596 | 0.9143 |
| EAC | 0.418 | 2.700 | 1.8656 | 0.7821 | 2.385 | 0.0314 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
