Projects

CSEMP assessment of mercury in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean119.7024.20-6.8513.70
linear219.3129.98-5.6611.312.387 10.1223
smooth (df = 2)318.4843.48-4.24 8.482.834 10.0923

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20062013-3.127-3.420-0.29300 0.17084-1.7150.1470
last 20 years20062013-3.127-3.420-0.29300 0.17084-1.7150.1470

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.032710.070000.76080.1178 6.4570.0007
ERL0.032710.150001.52300.117812.926<0.0001

 


Related pages

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