CSEMP assessment of c3 phenanthrenes 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 | 114.81 | 116.20 | -54.41 | 108.81 | |||
linear | 2 | 116.75 | 119.41 | -54.37 | 108.75 | 0.067 | 1 | 0.7951 |
smooth (df = 2) | 3 | 118.69 | 123.23 | -54.34 | 108.69 | 0.061 | 1 | 0.8055 |
smooth (df = 3) | 4 | 118.50 | 125.70 | -53.25 | 106.50 | 2.189 | 1 | 0.1390 |
smooth (df = 4) | 5 | 120.23 | 131.12 | -53.12 | 106.23 | 0.265 | 1 | 0.6064 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 4.797 | 4.864 | 0.06671 | 0.25677 | 0.260 | 0.7988 |
last 20 years | 2000 | 2018 | 4.797 | 4.864 | 0.06671 | 0.25677 | 0.260 | 0.7988 |
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 Phenanthrenes
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 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020