CSEMP assessment of CB180 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 | -15.13 | -6.13 | 10.57 | -21.13 | |||
linear | 2 | -13.37 | 18.63 | 10.69 | -21.37 | 0.243 | 1 | 0.6219 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2013 | 0.4297 | 0.5042 | 0.07447 | 0.14519 | 0.513 | 0.6434 |
last 20 years | 1999 | 2013 | 0.4297 | 0.5042 | 0.07447 | 0.14519 | 0.513 | 0.6434 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.656 | 0.100 | -2.8067 | 0.1212 | -23.161 | 0.9999 |
EAC | 1.656 | 12.000 | 1.9807 | 0.1212 | 16.345 | 0.0002 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for chlorobiphenyls in sediment
- Accessment criteria for chlorobiphenyls in sediment
Media : Sediment (unsieved)
Station : Clyde_FirthCInnerCumbraes_se01 (Inner Firth of Clyde, Nth of Cumbrae)
Determinand : CB180
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 : CB180
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020