CSEMP assessment of CB138 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 67.10 | 70.10 | -30.55 | 61.10 | | | |
| linear | 2 | 69.09 | 75.49 | -30.55 | 61.09 | 0.002 | 1 | 0.9685 |
| smooth (df = 2) | 3 | 60.67 | 73.17 | -25.33 | 50.67 | 10.425 | 1 | 0.0012 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2013 | 1.9006 | 1.8860 | -0.0146 | 0.3693 | -0.039 | 0.9696 |
| last 20 years | 2001 | 2013 | 1.9006 | 1.8860 | -0.0146 | 0.3693 | -0.039 | 0.9696 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 6.59 | 0.09 | -4.294 | 0.203 | -21.160 | 1.0000 |
| EAC | 6.59 | 62.13 | 2.243 | 0.203 | 11.055 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
