CSEMP assessment of anthracene 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 | 57.80 | 59.60 | -25.90 | 51.80 | |||
linear | 2 | 58.72 | 62.28 | -25.36 | 50.72 | 1.076 | 1 | 0.2996 |
smooth (df = 2) | 3 | 59.99 | 66.24 | -25.00 | 49.99 | 0.730 | 1 | 0.3929 |
smooth (df = 3) | 4 | 60.75 | 71.03 | -24.37 | 48.75 | 1.247 | 1 | 0.2642 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2013 | 4.283 | 3.950 | -0.3335 | 0.3183 | -1.048 | 0.3172 |
last 20 years | 2000 | 2013 | 4.283 | 3.950 | -0.3335 | 0.3183 | -1.048 | 0.3172 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 51.92 | 5.00 | -2.3403 | 0.1931 | -12.117 | 1.0000 |
ERL | 51.92 | 85.00 | 0.4929 | 0.1931 | 2.552 | 0.0134 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in sediment
- Accessment criteria for pah_(parent) in sediment
Media : Sediment (unsieved)
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020