Projects

CSEMP assessment of cadmium in sediment at Lough Foyle

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean123.3725.62-8.6917.37
linear222.6927.26-7.3414.692.686 10.1013
smooth (df = 2)324.6632.99-7.3314.660.028 10.8674
smooth (df = 3)426.5440.94-7.2714.540.121 10.7277

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20032018-1.3180-1.9168-0.5987 0.3436-1.7430.1154
last 20 years20032018-1.3180-1.9168-0.5987 0.3436-1.7430.1154

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.14710.31000.74560.1835 4.0630.0014
ERL0.14711.20002.09910.183511.438<0.0001

 


Related pages

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