CSEMP assessment of BDE47 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 | 81.49 | 85.99 | -37.74 | 75.49 | | | |
| linear | 2 | 83.24 | 93.91 | -37.62 | 75.24 | 0.245 | 1 | 0.6204 |
| smooth (df = 2) | 3 | 85.07 | 110.07 | -37.54 | 75.07 | 0.170 | 1 | 0.6802 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2015 | -1.6938 | -1.4023 | 0.2915 | 0.5876 | 0.496 | 0.6409 |
| last 20 years | 2008 | 2015 | -1.6938 | -1.4023 | 0.2915 | 0.5876 | 0.496 | 0.6409 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.25 | 0.05 | -1.593 | 0.386 | -4.128 | 0.9954 |
| FEQG | 0.25 | 97.50 | 5.982 | 0.386 | 15.497 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
