Projects

CSEMP assessment of mercury in sediment at Off Tyne

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean159.5563.15-26.7753.55
linear261.5469.54-26.7753.540.003 10.9584
smooth (df = 2)362.3679.02-26.1852.361.186 10.2761

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20022017-2.3429-2.31600.02690.50640.0530.9594
last 20 years20022017-2.3429-2.31600.02690.50640.0530.9594

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.098670.07000-0.3433 0.2744-1.2510.8713
ERL0.098670.15000 0.4189 0.2744 1.5270.0888

 


Related pages

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