Projects

CSEMP assessment of lead in sediment at outer (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean158.3859.77-26.1952.38
linear251.9454.60-21.9743.948.445 10.0037
smooth (df = 2)348.7953.34-19.4038.795.144 10.0233
smooth (df = 3)449.4856.68-18.7437.481.312 10.2519
smooth (df = 4)549.6860.57-17.8435.681.800 10.1797

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020164.5903.599-0.9900 0.2748-3.6030.0032
last 20 years200020164.5903.599-0.9900 0.2748-3.6030.0032

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC36.5838.000.038090.233790.1630.4365
ERL36.5847.000.250650.233791.0720.1516

 


Related pages

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