CSEMP assessment of c3 naphthalenes in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 168.67 | 171.24 | -81.33 | 162.67 | |||
| linear | 2 | 170.62 | 175.95 | -81.31 | 162.62 | 0.052 | 1 | 0.8201 |
| smooth (df = 2) | 3 | 171.19 | 181.19 | -80.59 | 161.19 | 1.430 | 1 | 0.2318 |
| smooth (df = 3) | 4 | 173.19 | 191.19 | -80.59 | 161.19 | 0.001 | 1 | 0.9701 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2009 | 2018 | 5.425 | 5.573 | 0.1480 | 0.6499 | 0.228 | 0.8256 |
| last 20 years | 2009 | 2018 | 5.425 | 5.573 | 0.1480 | 0.6499 | 0.228 | 0.8256 |
Status assessment
No assessment criteria
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_(inner)_seSF, inner (Firth of Clyde)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(inner)_seSF, inner (Firth of Clyde)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020