CSEMP assessment of c3 naphthalenes 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 | 87.39 | 89.97 | -40.70 | 81.39 | |||
linear | 2 | 89.38 | 94.71 | -40.69 | 81.38 | 0.013 | 1 | 0.9087 |
smooth (df = 2) | 3 | 90.31 | 100.31 | -40.16 | 80.31 | 1.070 | 1 | 0.3008 |
smooth (df = 3) | 4 | 92.27 | 110.27 | -40.13 | 80.27 | 0.043 | 1 | 0.8356 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.880 | 5.988 | 0.1080 | 0.9418 | 0.115 | 0.9115 |
last 20 years | 2009 | 2018 | 5.880 | 5.988 | 0.1080 | 0.9418 | 0.115 | 0.9115 |
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 Naphthalenes
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 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020