Projects

CSEMP assessment of pyrene in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean150.8053.37-22.4044.80
linear251.6456.97-21.8243.641.168 10.2799
smooth (df = 2)353.5763.57-21.7843.570.067 10.7952
smooth (df = 3)455.2973.29-21.6443.290.282 10.5954

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200520181.61222.20200.58970.52991.1130.2981
last 20 years200520181.61222.20200.58970.52991.1130.2981

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 9 240.9760.366 2.6640.0143
ERL 96654.2980.36611.729<0.0001

 


Related pages

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