CSEMP assessment of CB138 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 | 88.62 | 90.87 | -41.31 | 82.62 | | | |
| linear | 2 | 88.09 | 92.66 | -40.04 | 80.09 | 2.535 | 1 | 0.1114 |
| smooth (df = 2) | 3 | 89.54 | 97.87 | -39.77 | 79.54 | 0.551 | 1 | 0.4579 |
| smooth (df = 3) | 4 | 87.52 | 101.92 | -37.76 | 75.52 | 4.021 | 1 | 0.0449 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -2.5240 | -1.2597 | 1.2643 | 0.7637 | 1.655 | 0.1322 |
| last 20 years | 2006 | 2017 | -2.5240 | -1.2597 | 1.2643 | 0.7637 | 1.655 | 0.1322 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.284 | 0.150 | -0.637 | 0.436 | -1.463 | 0.9113 |
| EAC | 0.284 | 7.900 | 3.327 | 0.436 | 7.636 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
