CSEMP assessment of c1 dibenzothiophene in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 148.34 | 150.91 | -71.17 | 142.34 | |||
linear | 2 | 150.19 | 155.52 | -71.10 | 142.19 | 0.148 | 1 | 0.7003 |
smooth (df = 2) | 3 | 152.08 | 162.08 | -71.04 | 142.08 | 0.114 | 1 | 0.7355 |
smooth (df = 3) | 4 | 152.29 | 170.29 | -70.14 | 140.29 | 1.789 | 1 | 0.1810 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 3.1540 | 2.9713 | -0.1826 | 0.4721 | -0.387 | 0.7090 |
last 20 years | 2009 | 2018 | 3.1540 | 2.9713 | -0.1826 | 0.4721 | -0.387 | 0.7090 |
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_(middle)_seSF, middle (Firth of Clyde)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020