Projects

CSEMP assessment of copper in biota at Peterstone (Lower Severn)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean113.2916.89-3.657.29
linear215.2723.27-3.637.270.027 10.8703
smooth (df = 2)315.7432.41-2.875.741.524 10.2170

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120147.6287.559-0.0688 0.4207-0.1630.8755
last 20 years200120147.6287.559-0.0688 0.4207-0.1630.8755

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC1918.2 978.0-0.6737 0.2461-2.7370.9831

 


Raw data with supporting information

Raw data with supporting information for assessment of  copper in biota at Peterstone (Lower Severn)


Raw data with assessment

Raw data with assessment of  copper in biota at Peterstone (Lower Severn)


Assessment plot

Assessment plot for  copper in biota at Peterstone (Lower Severn)


Metals data

Metals data for assessment of  copper in biota at Peterstone (Lower Severn)


Metals assessment

Metals assessment of  copper in biota at Peterstone (Lower Severn)


Related pages

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