Projects

CSEMP assessment of CB28 in sediment at Hunterston (Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1164.88166.08-79.44158.88
linear2166.77169.06-79.39158.770.105 10.7463
smooth (df = 2)3168.16172.01-79.08158.160.615 10.4331
smooth (df = 3)4165.90171.90-76.95153.904.259 10.0390
smooth (df = 4)5166.67175.57-76.33152.671.235 10.2665

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20002018-0.9689-0.82060.14830.45470.3260.7485
last 20 years20002018-0.9689-0.82060.14830.45470.3260.7485

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.44020.2200-0.6935 0.2537-2.7340.9926
EAC0.44021.7000 1.3512 0.2537 5.326<0.0001

 


Related pages

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