CSEMP assessment of c3 dibenzothiophenes 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 | 157.30 | 159.87 | -75.65 | 151.30 | |||
linear | 2 | 156.73 | 162.06 | -74.36 | 148.73 | 2.574 | 1 | 0.1086 |
smooth (df = 2) | 3 | 157.10 | 167.10 | -73.55 | 147.10 | 1.633 | 1 | 0.2012 |
smooth (df = 3) | 4 | 158.77 | 176.77 | -73.39 | 146.77 | 0.323 | 1 | 0.5700 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 3.004 | 4.342 | 1.3380 | 0.7825 | 1.710 | 0.1256 |
last 20 years | 2009 | 2018 | 3.004 | 4.342 | 1.3380 | 0.7825 | 1.710 | 0.1256 |
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 : C3 Dibenzothiophenes
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 : C3 Dibenzothiophenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020