CSEMP assessment of CB118 in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 101.14 | 102.78 | -47.57 | 95.14 | |||
| linear | 2 | 99.31 | 102.51 | -45.65 | 91.31 | 3.836 | 1 | 0.0502 |
| smooth (df = 2) | 3 | 93.59 | 99.15 | -41.80 | 83.59 | 7.717 | 1 | 0.0055 |
| smooth (df = 3) | 4 | 95.59 | 104.59 | -41.79 | 83.59 | 0.001 | 1 | 0.9696 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2000 | 2018 | -1.4434 | -0.8326 | 0.6109 | 0.2208 | 2.766 | 0.0184 |
| last 20 years | 2000 | 2018 | -1.4434 | -0.8326 | 0.6109 | 0.2208 | 2.766 | 0.0184 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 0.4349 | 0.1700 | -0.9394 | 0.1434 | -6.549 | 1.0000 |
| EAC | 0.4349 | 0.6000 | 0.3217 | 0.1434 | 2.243 | 0.0232 |
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 : Forth_Estuary_seSF (Forth Estuary)
Determinand : CB118
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : CB118
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020