CSEMP assessment of CB153 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 | 23.94 | 26.52 | -8.97 | 17.94 | |||
linear | 2 | 25.86 | 31.19 | -8.93 | 17.86 | 0.084 | 1 | 0.7723 |
smooth (df = 2) | 3 | 27.86 | 37.86 | -8.93 | 17.86 | 0.001 | 1 | 0.9751 |
smooth (df = 3) | 4 | 29.42 | 47.42 | -8.71 | 17.42 | 0.438 | 1 | 0.5081 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2004 | 2018 | 3.255 | 3.166 | -0.08941 | 0.30837 | -0.290 | 0.7792 |
last 20 years | 2004 | 2018 | 3.255 | 3.166 | -0.08941 | 0.30837 | -0.290 | 0.7792 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 23.71 | 0.10 | -5.469 | 0.198 | -27.552 | 1.0000 |
EAC | 23.71 | 310.66 | 2.573 | 0.198 | 12.962 | <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 : CB153
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : CB153
Units : μg kg-1 wet weight
Data extraction : 30 April 2020