CSEMP assessment of CB138 in sediment at South Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 80.95 | 83.20 | -37.47 | 74.95 | | | |
| linear | 2 | 82.60 | 87.17 | -37.30 | 74.60 | 0.347 | 1 | 0.5560 |
| smooth (df = 2) | 3 | 78.36 | 86.69 | -34.18 | 68.36 | 6.240 | 1 | 0.0125 |
| smooth (df = 3) | 4 | 78.62 | 93.02 | -33.31 | 66.62 | 1.744 | 1 | 0.1866 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2017 | -1.8607 | -1.5515 | 0.3092 | 0.5156 | 0.600 | 0.5634 |
| last 20 years | 2007 | 2017 | -1.8607 | -1.5515 | 0.3092 | 0.5156 | 0.600 | 0.5634 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.212 | 0.150 | -0.346 | 0.312 | -1.107 | 0.8516 |
| EAC | 0.212 | 7.900 | 3.618 | 0.312 | 11.592 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
