CSEMP assessment of CB118 in biota at Mostyn Bank (Dee)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 40.52 | 45.02 | -17.26 | 34.52 | |||
linear | 2 | 39.87 | 50.54 | -15.94 | 31.87 | 2.645 | 1 | 0.1039 |
smooth (df = 2) | 3 | 41.75 | 66.75 | -15.87 | 31.75 | 0.124 | 1 | 0.7250 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2014 | 0.1487 | -1.1459 | -1.2947 | 0.7953 | -1.628 | 0.1645 |
last 20 years | 1999 | 2014 | 0.1487 | -1.1459 | -1.2947 | 0.7953 | -1.628 | 0.1645 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.3179 | 0.0978 | -1.1789 | 0.5497 | -2.145 | 0.9576 |
EAC | 0.3179 | 0.3250 | 0.0220 | 0.5497 | 0.040 | 0.4848 |
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_DeeNWales_sh01, Mostyn Bank (Dee)
Determinand : CB118
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_DeeNWales_sh01, Mostyn Bank (Dee)
Determinand : CB118
Units : μg kg-1 wet weight
Data extraction : 30 April 2020