CSEMP assessment of CB138 in sediment at Sea of Hebrides
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 163.81 | 165.81 | -78.91 | 157.81 | | | |
| linear | 2 | 164.30 | 168.30 | -78.15 | 156.30 | 1.513 | 1 | 0.2187 |
| smooth (df = 2) | 3 | 165.53 | 172.67 | -77.76 | 155.53 | 0.770 | 1 | 0.3801 |
| smooth (df = 3) | 4 | 167.44 | 179.44 | -77.72 | 155.44 | 0.087 | 1 | 0.7677 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -2.0197 | -1.5308 | 0.4889 | 0.3844 | 1.272 | 0.2322 |
| last 20 years | 2007 | 2018 | -2.0197 | -1.5308 | 0.4889 | 0.3844 | 1.272 | 0.2322 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.216 | 0.150 | -0.366 | 0.233 | -1.575 | 0.9268 |
| EAC | 0.216 | 7.900 | 3.598 | 0.233 | 15.466 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
