CSEMP assessment of CB52 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 | 108.54 | 113.04 | -51.27 | 102.54 | | | |
| linear | 2 | 110.44 | 121.10 | -51.22 | 102.44 | 0.101 | 1 | 0.7506 |
| smooth (df = 2) | 3 | 107.10 | 132.10 | -48.55 | 97.10 | 5.331 | 1 | 0.0210 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -1.9546 | -2.3367 | -0.3821 | 1.1262 | -0.339 | 0.7482 |
| last 20 years | 2006 | 2017 | -1.9546 | -2.3367 | -0.3821 | 1.1262 | -0.339 | 0.7482 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.0966 | 0.1200 | 0.216 | 0.689 | 0.314 | 0.3830 |
| EAC | 0.0966 | 2.7000 | 3.330 | 0.689 | 4.836 | 0.0024 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
