CSEMP assessment of c2 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 | 132.48 | 135.05 | -63.24 | 126.48 | |||
linear | 2 | 133.63 | 138.96 | -62.81 | 125.63 | 0.848 | 1 | 0.3571 |
smooth (df = 2) | 3 | 135.62 | 145.62 | -62.81 | 125.62 | 0.006 | 1 | 0.9396 |
smooth (df = 3) | 4 | 137.33 | 155.33 | -62.66 | 125.33 | 0.295 | 1 | 0.5872 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.406 | 5.929 | 0.5234 | 0.5548 | 0.943 | 0.3731 |
last 20 years | 2009 | 2018 | 5.406 | 5.929 | 0.5234 | 0.5548 | 0.943 | 0.3731 |
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 : C2 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 : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020