CSEMP assessment of c1 dibenzothiophene in sediment at Solway Firth
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 131.67 | 132.95 | -62.83 | 125.67 | |||
linear | 2 | 132.31 | 134.77 | -62.16 | 124.31 | 1.354 | 1 | 0.2446 |
smooth (df = 2) | 3 | 128.61 | 132.77 | -59.30 | 118.61 | 5.707 | 1 | 0.0169 |
smooth (df = 3) | 4 | 130.50 | 137.05 | -59.25 | 118.50 | 0.103 | 1 | 0.7486 |
smooth (df = 4) | 5 | 130.42 | 140.22 | -58.21 | 116.42 | 2.083 | 1 | 0.1489 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2001 | 2018 | 3.459 | 3.760 | 0.30053 | 0.18260 | 1.646 | 0.1221 |
last 20 years | 2001 | 2018 | 3.459 | 3.760 | 0.30053 | 0.18260 | 1.646 | 0.1221 |
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 : Solway_Firth_seSF (Solway Firth)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Solway_Firth_seSF (Solway Firth)
Determinand : C1 Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020