Projects

CSEMP assessment of 1-hydroxy pyrene equivalent in biota at Morecambe Bay

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1161.16163.16-77.58155.16
linear2162.75166.75-77.37154.750.417 10.5186
smooth (df = 2)3163.73170.88-76.87153.731.011 10.3146
smooth (df = 3)4162.94174.94-75.47150.942.790 10.0949

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20002016-1.3348-1.5120-0.17727 0.27258-0.6500.5301
last 20 years20002016-1.3348-1.5120-0.17727 0.27258-0.6500.5301

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 0.22 0.15-0.385 0.172-2.2340.9752
EAC 0.2222.00 4.603 0.17226.704<0.0001

 


Related pages

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