Projects

CSEMP assessment of lead in biota at Woolwich (Middle Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean164.6666.66-29.3358.66
linear260.9464.94-26.4752.945.723 10.0167
smooth (df = 2)361.2368.37-25.6251.231.703 10.1919
smooth (df = 3)460.6372.63-24.3248.632.601 10.1068

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920124.8694.208-0.6612 0.2273-2.9080.0156
last 20 years199920124.8694.208-0.6612 0.2273-2.9080.0156

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 67.2 26.0-0.9500 0.1194-7.9551.0000
EC 67.21500.0 3.1051 0.119426.001<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Woolwich (Middle Thames)


Raw data with assessment

Raw data with assessment of  lead in biota at Woolwich (Middle Thames)


Assessment plot

Assessment plot for  lead in biota at Woolwich (Middle Thames)


Metals data

Metals data for assessment of  lead in biota at Woolwich (Middle Thames)


Metals assessment

Metals assessment of  lead in biota at Woolwich (Middle Thames)


Related pages

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