CSEMP assessment of pyrene in sediment at Inner Firth of Clyde, Nth of Cumbrae
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 39.79 | 45.79 | -16.89 | 33.79 | |||
linear | 2 | 41.69 | 57.69 | -16.85 | 33.69 | 0.097 | 1 | 0.7552 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2013 | 6.107 | 5.964 | -0.1435 | 0.4569 | -0.314 | 0.7692 |
last 20 years | 2002 | 2013 | 6.107 | 5.964 | -0.1435 | 0.4569 | -0.314 | 0.7692 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 389 | 24 | -2.7855 | 0.3509 | -7.938 | 0.9993 |
ERL | 389 | 665 | 0.5362 | 0.3509 | 1.528 | 0.1006 |
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_se01 (Inner Firth of Clyde, Nth of Cumbrae)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerCumbraes_se01 (Inner Firth of Clyde, Nth of Cumbrae)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020