CSEMP assessment of CB180 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 72.07 | 74.32 | -33.03 | 66.07 | |||
linear | 2 | 67.02 | 71.59 | -29.51 | 59.02 | 7.050 | 1 | 0.0079 |
smooth (df = 2) | 3 | 65.10 | 73.43 | -27.55 | 55.10 | 3.923 | 1 | 0.0476 |
smooth (df = 3) | 4 | 61.28 | 75.68 | -24.64 | 49.28 | 5.819 | 1 | 0.0159 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2001 | 2017 | 2.0814 | 0.8206 | -1.2608 | 0.4017 | -3.139 | 0.0119 |
last 20 years | 2001 | 2017 | 2.0814 | 0.8206 | -1.2608 | 0.4017 | -3.139 | 0.0119 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 2.27 | 0.11 | -3.028 | 0.232 | -13.054 | 1.0000 |
EAC | 2.27 | 91.92 | 3.700 | 0.232 | 15.953 | <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 : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : CB180
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : CB180
Units : μg kg-1 wet weight
Data extraction : 30 April 2020