CSEMP assessment of c1 dibenzothiophene in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 84.69 | 87.26 | -39.34 | 78.69 | |||
linear | 2 | 86.23 | 91.56 | -39.11 | 78.23 | 0.462 | 1 | 0.4965 |
smooth (df = 2) | 3 | 88.15 | 98.15 | -39.08 | 78.15 | 0.076 | 1 | 0.7821 |
smooth (df = 3) | 4 | 90.13 | 108.13 | -39.07 | 78.13 | 0.019 | 1 | 0.8897 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 3.709 | 4.265 | 0.5555 | 0.8078 | 0.688 | 0.5111 |
last 20 years | 2009 | 2018 | 3.709 | 4.265 | 0.5555 | 0.8078 | 0.688 | 0.5111 |
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 : Forth_Estuary_seSF (Forth Estuary)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020