CSEMP assessment of c1 phenanthrenes in sediment at Skelmorlie (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 56.88 | 58.68 | -25.44 | 50.88 | |||
linear | 2 | 57.31 | 60.87 | -24.66 | 49.31 | 1.570 | 1 | 0.2102 |
smooth (df = 2) | 3 | 58.94 | 65.19 | -24.47 | 48.94 | 0.370 | 1 | 0.5429 |
smooth (df = 3) | 4 | 59.04 | 69.32 | -23.52 | 47.04 | 1.905 | 1 | 0.1675 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2013 | 5.829 | 5.430 | -0.3993 | 0.3128 | -1.276 | 0.2281 |
last 20 years | 2000 | 2013 | 5.829 | 5.430 | -0.3993 | 0.3128 | -1.276 | 0.2281 |
Status assessment
No assessment criteria
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (alkylated) data
PAH (alkylated) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(alkylated) in sediment
- Accessment criteria for pah_(alkylated) in sediment
Media : Sediment (unsieved)
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : C1 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : C1 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020