CSEMP assessment of BDE28 in sediment at Holy Loch (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 32.99 | 37.49 | -13.49 | 26.99 | | | |
| linear | 2 | 34.73 | 45.39 | -13.36 | 26.73 | 0.261 | 1 | 0.6092 |
| smooth (df = 2) | 3 | 33.31 | 58.31 | -11.66 | 23.31 | 3.411 | 1 | 0.0648 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -2.6779 | -3.1203 | -0.4424 | 0.8642 | -0.512 | 0.6305 |
| last 20 years | 2006 | 2018 | -2.6779 | -3.1203 | -0.4424 | 0.8642 | -0.512 | 0.6305 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.04 | 0.05 | 0.125 | 0.507 | 0.246 | 0.4079 |
| FEQG | 0.04 | 110.00 | 7.821 | 0.507 | 15.414 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
