CSEMP assessment of c3 dibenzothiophenes in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 126.47 | 127.67 | -60.24 | 120.47 | |||
linear | 2 | 128.34 | 130.63 | -60.17 | 120.34 | 0.130 | 1 | 0.7184 |
smooth (df = 2) | 3 | 129.64 | 133.49 | -59.82 | 119.64 | 0.697 | 1 | 0.4038 |
smooth (df = 3) | 4 | 130.99 | 136.99 | -59.50 | 118.99 | 0.654 | 1 | 0.4188 |
smooth (df = 4) | 5 | 131.99 | 140.90 | -59.00 | 117.99 | 0.998 | 1 | 0.3179 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 3.0704 | 2.9843 | -0.08605 | 0.23885 | -0.360 | 0.7234 |
last 20 years | 2000 | 2018 | 3.0704 | 2.9843 | -0.08605 | 0.23885 | -0.360 | 0.7234 |
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 : Clyde_(Hunterston)_seSF, Hunterston (Clyde)
Determinand : C3 Dibenzothiophenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_(Hunterston)_seSF, Hunterston (Clyde)
Determinand : C3 Dibenzothiophenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020