CSEMP assessment of c2 naphthalenes in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 136.17 | 138.74 | -65.08 | 130.17 | |||
linear | 2 | 137.56 | 142.90 | -64.78 | 129.56 | 0.606 | 1 | 0.4363 |
smooth (df = 2) | 3 | 139.28 | 149.28 | -64.64 | 129.28 | 0.287 | 1 | 0.5920 |
smooth (df = 3) | 4 | 141.15 | 159.15 | -64.57 | 129.15 | 0.127 | 1 | 0.7212 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 4.809 | 5.055 | 0.24545 | 0.31424 | 0.781 | 0.4572 |
last 20 years | 2009 | 2018 | 4.809 | 5.055 | 0.24545 | 0.31424 | 0.781 | 0.4572 |
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_(middle)_seSF, middle (Firth of Clyde)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020