CSEMP assessment of CB118 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 | 145.87 | 147.67 | -69.94 | 139.87 | | | |
| linear | 2 | 147.70 | 151.25 | -69.85 | 139.70 | 0.176 | 1 | 0.6750 |
| smooth (df = 2) | 3 | 149.17 | 155.42 | -69.58 | 139.17 | 0.531 | 1 | 0.4663 |
| smooth (df = 3) | 4 | 150.13 | 160.41 | -69.06 | 138.13 | 1.042 | 1 | 0.3074 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -1.9912 | -1.7410 | 0.2502 | 0.5925 | 0.422 | 0.6810 |
| last 20 years | 2006 | 2018 | -1.9912 | -1.7410 | 0.2502 | 0.5925 | 0.422 | 0.6810 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1753 | 0.1700 | -0.0310 | 0.3537 | -0.088 | 0.5341 |
| EAC | 0.1753 | 0.6000 | 1.2301 | 0.3537 | 3.478 | 0.0026 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
