Projects

CSEMP assessment of BDE47 in biota at Camarthen Bay

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean145.7347.98-19.8639.73
linear239.1643.73-15.5831.168.564 10.0034
smooth (df = 2)339.0547.38-14.5229.052.113 10.1461
smooth (df = 3)441.0055.40-14.5029.000.050 10.8232

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200320181.40590.0160-1.3899 0.3858-3.6020.0057
last 20 years200320181.40590.0160-1.3899 0.3858-3.6020.0057

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 1.02 0.01-4.439 0.239-18.5521.0000
FEQG 1.0244.00 3.768 0.239 15.749<0.0001

 


Related pages

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