CSEMP assessment of CB180 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 | 68.24 | 71.84 | -31.12 | 62.24 | | | |
| linear | 2 | 70.09 | 78.09 | -31.04 | 62.09 | 0.158 | 1 | 0.6907 |
| smooth (df = 2) | 3 | 70.39 | 87.06 | -30.19 | 60.39 | 1.697 | 1 | 0.1926 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2018 | -3.314 | -2.925 | 0.3882 | 0.9540 | 0.407 | 0.6982 |
| last 20 years | 2008 | 2018 | -3.314 | -2.925 | 0.3882 | 0.9540 | 0.407 | 0.6982 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.054 | 0.100 | 0.623 | 0.579 | 1.075 | 0.1619 |
| EAC | 0.054 | 12.000 | 5.410 | 0.579 | 9.336 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
