CSEMP assessment of CB118 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 | 79.89 | 82.46 | -36.94 | 73.89 | | | |
| linear | 2 | 81.58 | 86.91 | -36.79 | 73.58 | 0.306 | 1 | 0.5800 |
| smooth (df = 2) | 3 | 81.46 | 91.46 | -35.73 | 71.46 | 2.118 | 1 | 0.1456 |
| smooth (df = 3) | 4 | 81.29 | 99.29 | -34.64 | 69.29 | 2.173 | 1 | 0.1404 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -2.2081 | -1.6603 | 0.5478 | 0.9576 | 0.572 | 0.5830 |
| last 20 years | 2006 | 2018 | -2.2081 | -1.6603 | 0.5478 | 0.9576 | 0.572 | 0.5830 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1901 | 0.1700 | -0.1116 | 0.5720 | -0.195 | 0.5749 |
| EAC | 0.1901 | 0.6000 | 1.1495 | 0.5720 | 2.010 | 0.0397 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
