Projects

CSEMP assessment of chromium in sediment at Forth Estuary

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean111.0812.28-2.545.08
linear212.6714.96-2.334.670.415 10.5195
smooth (df = 2)314.6418.48-2.324.640.033 10.8554
smooth (df = 3)416.4322.43-2.214.430.207 10.6491
smooth (df = 4)517.8226.73-1.913.820.609 10.4351

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020174.4704.409-0.06174 0.09572-0.6450.5280
last 20 years200020174.4704.409-0.06174 0.09572-0.6450.5280

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
ERL82.1581.00-0.01415 0.05760-0.2460.5955

 


Related pages

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