CSEMP assessment of c2 naphthalenes in sediment at Sea of Hebrides
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 146.23 | 149.83 | -70.12 | 140.23 | |||
| linear | 2 | 145.33 | 153.33 | -68.67 | 137.33 | 2.900 | 1 | 0.0886 |
| smooth (df = 2) | 3 | 146.63 | 163.30 | -68.31 | 136.63 | 0.704 | 1 | 0.4016 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2006 | 2016 | 3.18 | 3.89 | 0.7102 | 0.3628 | 1.958 | 0.0980 |
| last 20 years | 2006 | 2016 | 3.18 | 3.89 | 0.7102 | 0.3628 | 1.958 | 0.0980 |
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 : MinchMalin_SeaOfHebrides_se01 (Sea of Hebrides)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_SeaOfHebrides_se01 (Sea of Hebrides)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020