CSEMP assessment of benzo[a]anthracene in biota at Roa Island (Morecambe Bay)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 55.41 | 61.41 | -24.70 | 49.41 | |||
linear | 2 | 55.65 | 71.65 | -23.83 | 47.65 | 1.758 | 1 | 0.1849 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2015 | 1.0795 | -0.4790 | -1.5585 | 1.1177 | -1.394 | 0.2357 |
last 20 years | 2002 | 2015 | 1.0795 | -0.4790 | -1.5585 | 1.1177 | -1.394 | 0.2357 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.619 | 0.408 | -0.4187 | 0.8049 | -0.520 | 0.6848 |
EAC | 0.619 | 13.040 | 3.0470 | 0.8049 | 3.785 | 0.0097 |
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_MorecambeBay_sh01, Roa Island (Morecambe Bay)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_MorecambeBay_sh01, Roa Island (Morecambe Bay)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020