CSEMP assessment of chrysene in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 31.04 | 37.04 | -12.52 | 25.04 | |||
linear | 2 | 32.55 | 48.55 | -12.27 | 24.55 | 0.491 | 1 | 0.4834 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2018 | 2.3503 | 1.2445 | -1.1058 | 1.5310 | -0.722 | 0.5101 |
last 20 years | 2002 | 2018 | 2.3503 | 1.2445 | -1.1058 | 1.5310 | -0.722 | 0.5101 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 3.471 | 1.320 | -0.9667 | 0.7079 | -1.366 | 0.8781 |
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_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : Chrysene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : Chrysene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020