Projects

CSEMP assessment of CB153 in biota at Grimsby Roads (Lower Humber)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean161.3363.90-27.6655.33
linear263.1268.45-27.5655.120.211 10.6459
smooth (df = 2)362.0172.01-26.0152.013.105 10.0781
smooth (df = 3)463.8881.88-25.9451.880.130 10.7183

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220122.67672.4799-0.1968 0.4204-0.4680.6522
last 20 years200220122.67672.4799-0.1968 0.4204-0.4680.6522

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 11.94 0.10-4.782 0.266-17.9841.0000
EAC 11.94206.05 2.848 0.266 10.711<0.0001

 


Related pages

  • Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
  • Assessment methodology for in biota
  • Accessment criteria for in biota