CSEMP assessment of CB28 in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 55.82 | 60.32 | -24.91 | 49.82 | |||
linear | 2 | 57.52 | 68.19 | -24.76 | 49.52 | 0.299 | 1 | 0.5844 |
smooth (df = 2) | 3 | 59.50 | 84.50 | -24.75 | 49.50 | 0.018 | 1 | 0.8945 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | -0.17552 | 0.09120 | 0.2667 | 0.4861 | 0.549 | 0.6068 |
last 20 years | 2005 | 2018 | -0.17552 | 0.09120 | 0.2667 | 0.4861 | 0.549 | 0.6068 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.095 | 0.100 | -2.3938 | 0.2753 | -8.694 | 0.9998 |
EAC | 1.095 | 13.132 | 2.4839 | 0.2753 | 9.021 | 0.0001 |
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 (Common dab liver)
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : CB28
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : CB28
Units : μg kg-1 wet weight
Data extraction : 30 April 2020