CSEMP assessment of BD209 in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 34.49 | 43.49 | -14.25 | 28.49 | |||
| linear | 2 | 36.00 | 68.00 | -14.00 | 28.00 | 0.496 | 1 | 0.4814 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2012 | 2018 | 3.957 | 3.676 | -0.2806 | 0.3412 | -0.823 | 0.4710 |
| last 20 years | 2012 | 2018 | 3.957 | 3.676 | -0.2806 | 0.3412 | -0.823 | 0.4710 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 39.51 | 0.05 | -6.672 | 0.224 | -29.829 | 1.0000 |
| FEQG | 39.51 | 47.50 | 0.184 | 0.224 | 0.824 | 0.2352 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in sediment
- Accessment criteria for in sediment
Media : Sediment (unsieved)
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : BD209
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : BD209
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020