CSEMP assessment of CB118 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 | 40.52 | 45.02 | -17.26 | 34.52 | | | |
| linear | 2 | 39.87 | 50.54 | -15.94 | 31.87 | 2.645 | 1 | 0.1039 |
| smooth (df = 2) | 3 | 41.75 | 66.75 | -15.87 | 31.75 | 0.124 | 1 | 0.7250 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2014 | 0.1487 | -1.1459 | -1.2947 | 0.7953 | -1.628 | 0.1645 |
| last 20 years | 1999 | 2014 | 0.1487 | -1.1459 | -1.2947 | 0.7953 | -1.628 | 0.1645 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.3179 | 0.0978 | -1.1789 | 0.5497 | -2.145 | 0.9576 |
| EAC | 0.3179 | 0.3250 | 0.0220 | 0.5497 | 0.040 | 0.4848 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
