Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1 5.88 7.26 0.06 -0.12
linear2 -5.04 -2.38 6.52-13.0412.918 10.0003
smooth (df = 2)3-16.09-11.5513.05-26.0913.053 10.0003
smooth (df = 3)4-16.21 -9.0114.11-28.21 2.116 10.1458
smooth (df = 4)5-14.28 -3.3914.14-28.28 0.072 10.7882

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020165.6774.669-1.0089 0.1493-6.757<0.0001
last 20 years200020165.6774.669-1.0089 0.1493-6.757<0.0001

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC106.54122.000.13550.12101.1200.1416
ERL106.54150.000.34210.12102.8270.0071

 


Related pages

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