CSEMP assessment of c3 phenanthrenes in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 96.01 | 98.58 | -45.01 | 90.01 | |||
linear | 2 | 98.01 | 103.34 | -45.01 | 90.01 | 0.001 | 1 | 0.9766 |
smooth (df = 2) | 3 | 98.66 | 108.66 | -44.33 | 88.66 | 1.347 | 1 | 0.2458 |
smooth (df = 3) | 4 | 100.65 | 118.65 | -44.32 | 88.65 | 0.017 | 1 | 0.8965 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.431 | 5.455 | 0.0244 | 0.8338 | 0.029 | 0.9774 |
last 20 years | 2009 | 2018 | 5.431 | 5.455 | 0.0244 | 0.8338 | 0.029 | 0.9774 |
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 : Forth_Estuary_seSF (Forth Estuary)
Determinand : C3 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : C3 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020