Projects

CSEMP assessment of mercury in biota at Red Wharf

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean126.2228.02-10.1120.22
linear225.1128.67 -8.5617.113.112 10.0777
smooth (df = 2)327.1033.35 -8.5517.100.012 10.9122
smooth (df = 3)429.0639.35 -8.5317.060.034 10.8537

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920165.0544.741-0.31256 0.16663-1.8760.0875
last 20 years199920165.0544.741-0.31256 0.16663-1.8760.0875

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC114.6 35.0-1.1857 0.1022-11.6011.0000
EC114.6500.0 1.4735 0.1022 14.416<0.0001

 


Related pages

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