Projects

CSEMP assessment of bde47 in biota at Morecambe Bay

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1112.62115.19-53.31106.62
linear2106.62111.96-49.31 98.627.998 10.0047
smooth (df = 2)3107.19117.19-48.60 97.191.428 10.2320
smooth (df = 3)4109.19127.19-48.60 97.190.000 10.9914

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200320162.95300.6812-2.2718 0.6493-3.4990.0081
last 20 years200320162.95300.6812-2.2718 0.6493-3.4990.0081

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 1.98 0.01-5.104 0.399-12.7951.0000
FEQG 1.9844.00 3.103 0.399 7.778<0.0001

 


Related pages

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