CSEMP assessment of phenanthrene 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 | 31.69 | 37.69 | -12.84 | 25.69 | |||
linear | 2 | 33.28 | 49.28 | -12.64 | 25.28 | 0.408 | 1 | 0.5228 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2015 | 1.2752 | 0.4414 | -0.8338 | 1.2982 | -0.642 | 0.5556 |
last 20 years | 2002 | 2015 | 1.2752 | 0.4414 | -0.8338 | 1.2982 | -0.642 | 0.5556 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.55 | 1.79 | 0.143 | 0.919 | 0.155 | 0.4422 |
EAC | 1.55 | 277.10 | 5.183 | 0.919 | 5.637 | 0.0024 |
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 : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_MorecambeBay_sh01, Roa Island (Morecambe Bay)
Determinand : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020