CSEMP assessment of mercury in sediment at middle (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
linear237.5742.14-14.7829.570.003 10.9530
smooth (df = 2)337.6846.01-13.8427.681.889 10.1693
smooth (df = 3)435.4049.80-11.7023.404.281 10.0385

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
last 20 years20062017-2.2817-2.27040.011300.190940.0590.9541

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.103270.07000-0.3889 0.0967-4.0210.9985
ERL0.103270.15000 0.3733 0.0967 3.8590.0019


Related pages

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