CSEMP assessment of BD100 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 | 16.64 | 20.24 | -5.32 | 10.64 | | | |
| linear | 2 | 17.87 | 25.87 | -4.94 | 9.87 | 0.763 | 1 | 0.3823 |
| smooth (df = 2) | 3 | 19.70 | 36.37 | -4.85 | 9.70 | 0.171 | 1 | 0.6793 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -2.1779 | -2.5028 | -0.3248 | 0.3676 | -0.884 | 0.4109 |
| last 20 years | 2006 | 2018 | -2.1779 | -2.5028 | -0.3248 | 0.3676 | -0.884 | 0.4109 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.0819 | 0.0500 | -0.4930 | 0.2259 | -2.183 | 0.9641 |
| FEQG | 0.0819 | 1.0000 | 2.5028 | 0.2259 | 11.081 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
