Projects

CSEMP assessment of arsenic in sediment at Woolwich (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean130.6933.26-12.3424.69
linear229.7835.11-10.8921.782.911 10.0880
smooth (df = 2)326.0536.05 -8.0216.055.727 10.0167
smooth (df = 3)424.3742.37 -6.1912.373.677 10.0552

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920122.5933.3300.73660.40551.8170.1068
last 20 years199920122.5933.3300.73660.40551.8170.1068

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC27.92625.000-0.11067 0.27104-0.4080.6531

 


Raw data with supporting information

Raw data with supporting information for assessment of  arsenic in sediment at Woolwich (Thames)


Raw data with assessment

Raw data with assessment of  arsenic in sediment at Woolwich (Thames)


Assessment plot

Assessment plot for  arsenic in sediment at Woolwich (Thames)


Metals data

Metals data for assessment of  arsenic in sediment at Woolwich (Thames)


Metals assessment

Metals assessment of  arsenic in sediment at Woolwich (Thames)


Related pages

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