Projects

CSEMP assessment of lead in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-17.26-12.7611.63-23.26
linear2-16.48 -5.8212.24-24.481.224 10.2687
smooth (df = 2)3-16.71 8.2913.35-26.712.224 10.1358

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620132.99142.8887-0.10267 0.10259-1.0010.3629
last 20 years200620132.99142.8887-0.10267 0.10259-1.0010.3629

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC17.9738.000.74890.0754 9.926<0.0001
ERL17.9747.000.96140.075412.744<0.0001

 


Related pages

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