CSEMP assessment of c3 naphthalenes 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 | 75.29 | 78.29 | -34.64 | 69.29 | |||
linear | 2 | 74.30 | 80.70 | -33.15 | 66.30 | 2.986 | 1 | 0.0840 |
smooth (df = 2) | 3 | 65.77 | 78.27 | -27.89 | 55.77 | 10.530 | 1 | 0.0012 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.648 | 4.753 | -0.8955 | 0.2339 | -3.828 | 0.0087 |
last 20 years | 2009 | 2018 | 5.648 | 4.753 | -0.8955 | 0.2339 | -3.828 | 0.0087 |
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 : C3 Naphthalenes
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 : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020