CSEMP assessment of CB138 in biota at Mostyn Bank (Dee)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 37.18 | 41.68 | -15.59 | 31.18 | | | |
| linear | 2 | 37.07 | 47.74 | -14.54 | 29.07 | 2.105 | 1 | 0.1468 |
| smooth (df = 2) | 3 | 39.01 | 64.01 | -14.50 | 29.01 | 0.066 | 1 | 0.7970 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2014 | 0.5758 | -0.4516 | -1.0274 | 0.6819 | -1.507 | 0.1922 |
| last 20 years | 2000 | 2014 | 0.5758 | -0.4516 | -1.0274 | 0.6819 | -1.507 | 0.1922 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.637 | 0.098 | -1.8732 | 0.4598 | -4.074 | 0.9952 |
| EAC | 0.637 | 4.121 | 1.8677 | 0.4598 | 4.062 | 0.0049 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
