CSEMP assessment of CB101 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 | 43.54 | 47.14 | -18.77 | 37.54 | | | |
| linear | 2 | 43.42 | 51.42 | -17.71 | 35.42 | 2.125 | 1 | 0.1449 |
| smooth (df = 2) | 3 | 45.30 | 61.97 | -17.65 | 35.30 | 0.113 | 1 | 0.7371 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2014 | 0.1265 | -0.9019 | -1.0283 | 0.6993 | -1.470 | 0.1918 |
| last 20 years | 1999 | 2014 | 0.1265 | -0.9019 | -1.0283 | 0.6993 | -1.470 | 0.1918 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.4058 | 0.1141 | -1.2688 | 0.4613 | -2.751 | 0.9834 |
| EAC | 0.4058 | 1.5730 | 1.3548 | 0.4613 | 2.937 | 0.0130 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
