Projects

CSEMP assessment of lead in sediment at Woolwich (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-2.84-0.274.42 -8.84
linear2-2.61 2.725.31-10.611.777 10.1826
smooth (df = 2)3-1.64 8.365.82-11.641.024 10.3115
smooth (df = 3)4-0.0817.926.04-12.080.444 10.5053

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920125.0235.5660.54240.39021.3900.2019
last 20 years199920125.0235.5660.54240.39021.3900.2019

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC261.36 38.00-1.9283 0.2591-7.4421.0000
ERL261.36 47.00-1.7157 0.2591-6.6220.9999

 


Raw data with supporting information

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


Raw data with assessment

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


Assessment plot

Assessment plot for  lead in sediment at Woolwich (Thames)


Metals data

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


Metals assessment

Metals assessment of  lead 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