CSEMP assessment of c1 phenanthrenes 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 | 159.83 | 162.40 | -76.91 | 153.83 | |||
linear | 2 | 158.40 | 163.74 | -75.20 | 150.40 | 3.423 | 1 | 0.0643 |
smooth (df = 2) | 3 | 159.79 | 169.79 | -74.89 | 149.79 | 0.616 | 1 | 0.4325 |
smooth (df = 3) | 4 | 160.61 | 178.61 | -74.30 | 148.61 | 1.178 | 1 | 0.2778 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.096 | 6.270 | 1.1742 | 0.5789 | 2.029 | 0.0770 |
last 20 years | 2009 | 2018 | 5.096 | 6.270 | 1.1742 | 0.5789 | 2.029 | 0.0770 |
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 : Firth_of_Clyde_(inner)_seSF, inner (Firth of Clyde)
Determinand : C1 Phenanthrenes
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 : C1 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020