CSEMP assessment of CB118 in biota at Roa Island (Morecambe Bay)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 19.69 | 22.69 | -6.85 | 13.69 | | | |
| linear | 2 | 20.11 | 26.51 | -6.06 | 12.11 | 1.580 | 1 | 0.2088 |
| smooth (df = 2) | 3 | 21.61 | 34.11 | -5.81 | 11.61 | 0.501 | 1 | 0.4790 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | -0.7350 | -1.1769 | -0.4419 | 0.3394 | -1.302 | 0.2342 |
| last 20 years | 1999 | 2015 | -0.7350 | -1.1769 | -0.4419 | 0.3394 | -1.302 | 0.2342 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.3082 | 0.0978 | -1.1479 | 0.2513 | -4.568 | 0.9987 |
| EAC | 0.3082 | 0.3250 | 0.0530 | 0.2513 | 0.211 | 0.4195 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
