CSEMP assessment of c2 phenanthrenes in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 163.18 | 166.18 | -78.59 | 157.18 | |||
linear | 2 | 164.69 | 171.09 | -78.34 | 156.69 | 0.493 | 1 | 0.4826 |
smooth (df = 2) | 3 | 166.33 | 178.83 | -78.17 | 156.33 | 0.358 | 1 | 0.5499 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 4.529 | 5.129 | 0.6001 | 0.8442 | 0.711 | 0.5002 |
last 20 years | 2009 | 2018 | 4.529 | 5.129 | 0.6001 | 0.8442 | 0.711 | 0.5002 |
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_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020