CSEMP assessment of CB101 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 | 33.02 | 37.52 | -13.51 | 27.02 | | | |
| linear | 2 | 34.40 | 45.07 | -13.20 | 26.40 | 0.615 | 1 | 0.4327 |
| smooth (df = 2) | 3 | 34.95 | 59.95 | -12.48 | 24.95 | 1.447 | 1 | 0.2291 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | -1.0173 | -1.8352 | -0.8179 | 1.0479 | -0.780 | 0.4704 |
| last 20 years | 1999 | 2015 | -1.0173 | -1.8352 | -0.8179 | 1.0479 | -0.780 | 0.4704 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1596 | 0.1141 | -0.3355 | 0.7528 | -0.446 | 0.6628 |
| EAC | 0.1596 | 1.5730 | 2.2882 | 0.7528 | 3.040 | 0.0144 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
