Projects

CSEMP assessment of naphthalene in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean160.7863.78-27.3954.78
linear262.6769.07-27.3354.670.118 10.7312
smooth (df = 2)363.0875.58-26.5453.081.589 10.2075

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200520130.72030.5617-0.1585 0.4595-0.3450.7402
last 20 years200520130.72030.5617-0.1585 0.4595-0.3450.7402

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 1.75 8.001.5180.282 5.3800.0005
ERL 1.75160.004.5130.28215.999<0.0001

 


Related pages

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