CSEMP assessment of c2 dibenzothiophene 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 | 169.22 | 171.79 | -81.61 | 163.22 | |||
linear | 2 | 169.27 | 174.60 | -80.63 | 161.27 | 1.950 | 1 | 0.1626 |
smooth (df = 2) | 3 | 170.39 | 180.39 | -80.20 | 160.39 | 0.877 | 1 | 0.3490 |
smooth (df = 3) | 4 | 171.87 | 189.87 | -79.94 | 159.87 | 0.520 | 1 | 0.4708 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 3.065 | 4.508 | 1.4432 | 0.9851 | 1.465 | 0.1811 |
last 20 years | 2009 | 2018 | 3.065 | 4.508 | 1.4432 | 0.9851 | 1.465 | 0.1811 |
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 Dibenzothiophene
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 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020