CSEMP assessment of c3 phenanthrenes in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 156.56 | 159.13 | -75.28 | 150.56 | |||
linear | 2 | 157.55 | 162.88 | -74.77 | 149.55 | 1.017 | 1 | 0.3132 |
smooth (df = 2) | 3 | 159.52 | 169.52 | -74.76 | 149.52 | 0.022 | 1 | 0.8833 |
smooth (df = 3) | 4 | 161.26 | 179.26 | -74.63 | 149.26 | 0.260 | 1 | 0.6100 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 4.485 | 5.531 | 1.0459 | 1.0140 | 1.032 | 0.3325 |
last 20 years | 2009 | 2018 | 4.485 | 5.531 | 1.0459 | 1.0140 | 1.032 | 0.3325 |
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_(inner)_seSF, inner (Firth of Clyde)
Determinand : C3 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(inner)_seSF, inner (Firth of Clyde)
Determinand : C3 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020