CSEMP assessment of CB118 in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 98.30 | 100.10 | -46.15 | 92.30 | | | |
| linear | 2 | 96.49 | 100.05 | -44.25 | 88.49 | 3.810 | 1 | 0.0510 |
| smooth (df = 2) | 3 | 91.10 | 97.35 | -40.55 | 81.10 | 7.396 | 1 | 0.0065 |
| smooth (df = 3) | 4 | 92.93 | 103.21 | -40.46 | 80.93 | 0.173 | 1 | 0.6778 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | -1.4790 | -0.8301 | 0.6489 | 0.2303 | 2.817 | 0.0182 |
| last 20 years | 2000 | 2017 | -1.4790 | -0.8301 | 0.6489 | 0.2303 | 2.817 | 0.0182 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.436 | 0.170 | -0.9419 | 0.1473 | -6.394 | 1.0000 |
| EAC | 0.436 | 0.600 | 0.3193 | 0.1473 | 2.168 | 0.0277 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
