Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean127.3929.96-10.7021.39
linear226.1931.52 -9.1018.193.200 10.0736
smooth (df = 2)322.4932.49 -6.2412.495.705 10.0169
smooth (df = 3)424.4942.49 -6.2412.490.000 10.9948

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120144.2245.1450.92140.47391.9440.0878
last 20 years200120144.2245.1450.92140.47391.9440.0878

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC171.6 14.7-2.4594 0.2878-8.5461.0000
EC171.6500.0 1.0694 0.2878 3.7160.0030

 


Raw data with supporting information

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


Raw data with assessment

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


Assessment plot

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


Metals data

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


Metals assessment

Metals assessment of  mercury 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