CSEMP assessment of chrysene in biota at Conwy Sands (Conwy Bay)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 10.49 | 19.49 | -2.25 | 4.49 | |||
linear | 2 | 11.99 | 43.99 | -2.00 | 3.99 | 0.499 | 1 | 0.4798 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2012 | 2018 | 0.12961 | -0.09401 | -0.22363 | 0.29796 | -0.751 | 0.5074 |
last 20 years | 2012 | 2018 | 0.12961 | -0.09401 | -0.22363 | 0.29796 | -0.751 | 0.5074 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.9103 | 1.3203 | 0.3719 | 0.2006 | 1.854 | 0.0804 |
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 biota
- Accessment criteria for pah_(parent) in biota
Media : Biota (Blue mussel soft body)
Station : IrishSea_Conwy_sh02, Conwy Sands (Conwy Bay)
Determinand : Chrysene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_Conwy_sh02, Conwy Sands (Conwy Bay)
Determinand : Chrysene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020