Projects

CSEMP assessment of lead in biota at C1 buoy (Liverpool Bay)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean179.0181.26-36.5173.01
linear265.6370.20-28.8257.6315.380 1<0.0001
smooth (df = 2)366.0674.39-28.0356.06 1.575 10.2095
smooth (df = 3)467.6682.06-27.8355.66 0.399 10.5276

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920126.0924.872-1.2201 0.1941-6.2860.0001
last 20 years199920126.0924.872-1.2201 0.1941-6.2860.0001

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 130.6 26.0-1.6140 0.1086-14.8661.0000
EC 130.61500.0 2.4411 0.1086 22.485<0.0001

 


Related pages

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