CSEMP assessment of CB153 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 | 36.90 | 39.47 | -15.45 | 30.90 | | | |
| linear | 2 | 37.21 | 42.55 | -14.61 | 29.21 | 1.687 | 1 | 0.1939 |
| smooth (df = 2) | 3 | 39.18 | 49.18 | -14.59 | 29.18 | 0.032 | 1 | 0.8590 |
| smooth (df = 3) | 4 | 41.50 | 59.50 | -14.75 | 29.50 | -0.316 | 1 | 1.0000 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2014 | 1.0025 | 0.1983 | -0.8042 | 0.5833 | -1.379 | 0.2053 |
| last 20 years | 1999 | 2014 | 1.0025 | 0.1983 | -0.8042 | 0.5833 | -1.379 | 0.2053 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.219 | 0.098 | -2.5232 | 0.3535 | -7.139 | 1.0000 |
| EAC | 1.219 | 20.605 | 2.8272 | 0.3535 | 7.999 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
