CSEMP assessment of CB118 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 | 27.71 | 29.96 | -10.86 | 21.71 | |||
linear | 2 | 24.25 | 28.82 | -8.13 | 16.25 | 5.460 | 1 | 0.0195 |
smooth (df = 2) | 3 | 26.15 | 34.48 | -8.07 | 16.15 | 0.105 | 1 | 0.7458 |
smooth (df = 3) | 4 | 27.87 | 42.27 | -7.94 | 15.87 | 0.275 | 1 | 0.5998 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 0.9065 | -0.0023 | -0.9088 | 0.3417 | -2.659 | 0.0261 |
last 20 years | 2000 | 2018 | 0.9065 | -0.0023 | -0.9088 | 0.3417 | -2.659 | 0.0261 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.9977 | 0.0978 | -2.3225 | 0.2024 | -11.475 | 1.0000 |
EAC | 0.9977 | 0.3250 | -1.1216 | 0.2024 | -5.542 | 0.9998 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for chlorobiphenyls in biota
- Accessment criteria for chlorobiphenyls in biota
Media : Biota (Blue mussel soft body)
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : CB118
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : CB118
Units : μg kg-1 wet weight
Data extraction : 30 April 2020