CSEMP assessment of c3 naphthalenes in sediment at Skelmorlie (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 63.78 | 65.58 | -28.89 | 57.78 | |||
linear | 2 | 64.15 | 67.71 | -28.08 | 56.15 | 1.626 | 1 | 0.2023 |
smooth (df = 2) | 3 | 63.96 | 70.21 | -26.98 | 53.96 | 2.196 | 1 | 0.1384 |
smooth (df = 3) | 4 | 65.93 | 76.21 | -26.96 | 53.93 | 0.028 | 1 | 0.8679 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2013 | 5.495 | 5.041 | -0.4535 | 0.3481 | -1.303 | 0.2192 |
last 20 years | 2000 | 2013 | 5.495 | 5.041 | -0.4535 | 0.3481 | -1.303 | 0.2192 |
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 : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020