CSEMP assessment of CB138 in biota at Forth estuary @ Blackness
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 22.44 | 24.69 | -8.22 | 16.44 | | | |
| linear | 2 | 24.40 | 28.97 | -8.20 | 16.40 | 0.037 | 1 | 0.8473 |
| smooth (df = 2) | 3 | 26.39 | 34.72 | -8.19 | 16.39 | 0.012 | 1 | 0.9123 |
| smooth (df = 3) | 4 | 21.33 | 35.73 | -4.67 | 9.33 | 7.054 | 1 | 0.0079 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2014 | 0.4523 | 0.3844 | -0.0679 | 0.3505 | -0.194 | 0.8507 |
| last 20 years | 1999 | 2014 | 0.4523 | 0.3844 | -0.0679 | 0.3505 | -0.194 | 0.8507 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.469 | 0.098 | -2.7093 | 0.2098 | -12.912 | 1.0000 |
| EAC | 1.469 | 4.121 | 1.0317 | 0.2098 | 4.917 | 0.0004 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
