Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean163.4366.00-28.7257.43
linear261.4066.73-26.7053.404.033 10.0446
smooth (df = 2)362.9172.91-26.4552.910.495 10.4817
smooth (df = 3)463.3281.32-25.6651.321.589 10.2075

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220123.8713.275-0.5957 0.2885-2.0650.0728
last 20 years200220123.8713.275-0.5957 0.2885-2.0650.0728

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 26.4 35.00.28020.1715 1.6330.0705
EC 26.4500.02.93940.171517.138<0.0001

 


Related pages

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