Projects

CSEMP assessment of CB138 in biota at Grimsby Roads (Lower Humber)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean153.1756.77-23.5847.17
linear249.7057.70-20.8541.705.469 10.0194
smooth (df = 2)349.1665.82-19.5839.162.540 10.1110

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220122.16321.2567-0.9065 0.3363-2.6950.0358
last 20 years200220122.16321.2567-0.9065 0.3363-2.6950.0358

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 3.51 0.09-3.665 0.232-15.8151.0000
EAC 3.5141.21 2.462 0.232 10.625<0.0001

 


Related pages

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