CSEMP assessment of CB101 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 | 6.73 | 8.53 | -0.37 | 0.73 | |||
linear | 2 | 4.77 | 8.33 | 1.61 | -3.23 | 3.957 | 1 | 0.0467 |
smooth (df = 2) | 3 | 6.77 | 13.02 | 1.61 | -3.23 | 0.004 | 1 | 0.9518 |
smooth (df = 3) | 4 | 8.37 | 18.66 | 1.81 | -3.63 | 0.401 | 1 | 0.5266 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 1.0774 | 0.4797 | -0.5976 | 0.2775 | -2.153 | 0.0543 |
last 20 years | 2000 | 2018 | 1.0774 | 0.4797 | -0.5976 | 0.2775 | -2.153 | 0.0543 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.6157 | 0.1141 | -2.6504 | 0.1610 | -16.466 | 1.0000 |
EAC | 1.6157 | 1.5730 | -0.0268 | 0.1610 | -0.166 | 0.5645 |
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 : CB101
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : CB101
Units : μg kg-1 wet weight
Data extraction : 30 April 2020