CSEMP assessment of nickel in sediment at Lough Foyle

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-1.05 0.953.53 -7.05
linear2-2.94 1.065.47-10.943.886 10.0487
smooth (df = 2)3-1.83 5.315.92-11.830.893 10.3446
smooth (df = 3)4-0.0111.996.00-12.010.174 10.6769

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200320183.6503.119-0.5310 0.2486-2.1360.0584
last 20 years200320183.6503.119-0.5310 0.2486-2.1360.0584

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)


Related pages

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