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 | 85.79 | 87.79 | -39.90 | 79.79 | | | |
| linear | 2 | 87.60 | 91.60 | -39.80 | 79.60 | 0.186 | 1 | 0.6665 |
| smooth (df = 2) | 3 | 86.30 | 93.44 | -38.15 | 76.30 | 3.307 | 1 | 0.0690 |
| smooth (df = 3) | 4 | 88.28 | 100.28 | -38.14 | 76.28 | 0.016 | 1 | 0.8979 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -1.8155 | -1.6121 | 0.2034 | 0.4691 | 0.434 | 0.6738 |
| last 20 years | 2007 | 2018 | -1.8155 | -1.6121 | 0.2034 | 0.4691 | 0.434 | 0.6738 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.199 | 0.150 | -0.285 | 0.281 | -1.015 | 0.8331 |
| EAC | 0.199 | 7.900 | 3.679 | 0.281 | 13.106 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
