CSEMP assessment of benzo[a]anthracene in biota at New Brighton (Mersey)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 17.40 | 23.40 | -5.70 | 11.40 | |||
linear | 2 | 18.83 | 34.83 | -5.41 | 10.83 | 0.570 | 1 | 0.4501 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2018 | 1.3484 | 0.6669 | -0.6815 | 0.8750 | -0.779 | 0.4796 |
last 20 years | 2002 | 2018 | 1.3484 | 0.6669 | -0.6815 | 0.8750 | -0.779 | 0.4796 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.948 | 0.408 | -1.5646 | 0.4825 | -3.243 | 0.9842 |
EAC | 1.948 | 13.040 | 1.9011 | 0.4825 | 3.941 | 0.0085 |
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_Mersey_sh01, New Brighton (Mersey)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_Mersey_sh01, New Brighton (Mersey)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020