CSEMP assessment of BD183 in sediment at Garroch Head (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 46.80 | 52.80 | -20.40 | 40.80 | | | |
| linear | 2 | 48.52 | 64.52 | -20.26 | 40.52 | 0.278 | 1 | 0.5978 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -3.467 | -4.210 | -0.7426 | 1.4158 | -0.524 | 0.6277 |
| last 20 years | 2006 | 2018 | -3.467 | -4.210 | -0.7426 | 1.4158 | -0.524 | 0.6277 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0 | 0 | 1.214 | 0.967 | 1.256 | 0.1387 |
| FEQG | 0 | 14000 | 13.757 | 0.967 | 14.230 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
