Projects

CSEMP assessment of CB180 in biota at Grimsby Roads (Lower Humber)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean163.3366.33-28.6657.33
linear265.2271.62-28.6157.220.106 10.7453
smooth (df = 2)365.9978.49-27.9955.991.233 10.2668

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220122.26752.0913-0.1762 0.5349-0.3290.7515
last 20 years200220122.26752.0913-0.1762 0.5349-0.3290.7515

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 8.10 0.11-4.299 0.350-12.2711.0000
EAC 8.1060.97 2.019 0.350 5.7640.0003

 


Related pages

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