CSEMP assessment of c2 naphthalenes 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 | 114.54 | 117.11 | -54.27 | 108.54 | |||
linear | 2 | 115.79 | 121.12 | -53.90 | 107.79 | 0.749 | 1 | 0.3867 |
smooth (df = 2) | 3 | 116.92 | 126.92 | -53.46 | 106.92 | 0.871 | 1 | 0.3506 |
smooth (df = 3) | 4 | 118.79 | 136.79 | -53.40 | 106.79 | 0.129 | 1 | 0.7199 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | 5.165 | 5.718 | 0.5526 | 0.6260 | 0.883 | 0.4032 |
last 20 years | 2009 | 2018 | 5.165 | 5.718 | 0.5526 | 0.6260 | 0.883 | 0.4032 |
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 : C2 Naphthalenes
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 : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020