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 | 136.19 | 138.19 | -65.09 | 130.19 | | | |
| linear | 2 | 137.94 | 141.94 | -64.97 | 129.94 | 0.246 | 1 | 0.6200 |
| smooth (df = 2) | 3 | 138.85 | 145.99 | -64.42 | 128.85 | 1.095 | 1 | 0.2954 |
| smooth (df = 3) | 4 | 137.40 | 149.40 | -62.70 | 125.40 | 3.443 | 1 | 0.0635 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -2.0495 | -1.7178 | 0.3317 | 0.6555 | 0.506 | 0.6238 |
| last 20 years | 2006 | 2017 | -2.0495 | -1.7178 | 0.3317 | 0.6555 | 0.506 | 0.6238 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1795 | 0.1700 | -0.0542 | 0.3936 | -0.138 | 0.5534 |
| EAC | 0.1795 | 0.6000 | 1.2070 | 0.3936 | 3.066 | 0.0060 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
