CSEMP assessment of CB180 in sediment at Solway Firth
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 119.00 | 121.57 | -56.50 | 113.00 | | | |
| linear | 2 | 120.80 | 126.13 | -56.40 | 112.80 | 0.200 | 1 | 0.6550 |
| smooth (df = 2) | 3 | 119.38 | 129.38 | -54.69 | 109.38 | 3.416 | 1 | 0.0646 |
| smooth (df = 3) | 4 | 121.38 | 139.38 | -54.69 | 109.38 | 0.000 | 1 | 0.9948 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2018 | -2.6185 | -2.9372 | -0.3187 | 0.7068 | -0.451 | 0.6640 |
| last 20 years | 2001 | 2018 | -2.6185 | -2.9372 | -0.3187 | 0.7068 | -0.451 | 0.6640 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.053 | 0.100 | 0.635 | 0.421 | 1.508 | 0.0850 |
| EAC | 0.053 | 12.000 | 5.422 | 0.421 | 12.887 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
