Projects

CSEMP assessment of lead in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-27.29-23.6916.65-33.29
linear2-25.76-17.7616.88-33.760.469 10.4936
smooth (df = 2)3-25.32 -8.6517.66-35.321.561 10.2116

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620133.1863.128-0.05827 0.09561-0.6090.5646
last 20 years200620133.1863.128-0.05827 0.09561-0.6090.5646

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC22.8338.000.50970.0637 8.0080.0001
ERL22.8347.000.72230.063711.347<0.0001

 


Related pages

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