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 | 43.95 | 52.95 | -18.98 | 37.95 | | | |
| linear | 2 | 45.60 | 77.60 | -18.80 | 37.60 | 0.348 | 1 | 0.5550 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -3.367 | -4.139 | -0.7722 | 1.3059 | -0.591 | 0.5959 |
| last 20 years | 2006 | 2017 | -3.367 | -4.139 | -0.7722 | 1.3059 | -0.591 | 0.5959 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0 | 0 | 1.143 | 0.618 | 1.850 | 0.0807 |
| FEQG | 0 | 14000 | 13.686 | 0.618 | 22.150 | 0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
