CSEMP assessment of fluoranthene 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 | 5.60 | 8.60 | 0.20 | -0.40 | |||
linear | 2 | 1.78 | 8.18 | 3.11 | -6.22 | 5.828 | 1 | 0.0158 |
smooth (df = 2) | 3 | 3.35 | 15.85 | 3.33 | -6.65 | 0.428 | 1 | 0.5131 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2002 | 2018 | 2.7486 | 2.0914 | -0.6572 | 0.2357 | -2.788 | 0.0270 |
last 20 years | 2002 | 2018 | 2.7486 | 2.0914 | -0.6572 | 0.2357 | -2.788 | 0.0270 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 8.096 | 1.989 | -1.4040 | 0.1431 | -9.809 | 1.0000 |
EAC | 8.096 | 17.930 | 0.7951 | 0.1431 | 5.555 | 0.0004 |
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 : Fluoranthene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : Fluoranthene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020