Projects

CSEMP assessment of nickel in sediment at Forth Estuary

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean138.2639.46-16.1332.26
linear240.2342.52-16.1232.230.027 10.8698
smooth (df = 2)341.5245.36-15.7631.520.713 10.3984
smooth (df = 3)443.5049.50-15.7531.500.014 10.9072
smooth (df = 4)542.9651.87-14.4828.962.547 10.1105

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020173.4733.4920.019110.116580.1640.8719
last 20 years200020173.4733.4920.019110.116580.1640.8719

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC32.8436.000.091900.066381.3840.0926

 


Related pages

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