Projects

CSEMP assessment of lead in sediment at Gabbard 2 (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean146.4850.08-20.2440.48
linear243.4551.45-17.7235.455.034 10.0249
smooth (df = 2)345.3962.05-17.6935.390.062 10.8032

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120174.6293.465-1.1641 0.4756-2.4470.0500
last 20 years200120174.6293.465-1.1641 0.4756-2.4470.0500

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC31.9638.000.17310.31580.5480.3017
ERL31.9647.000.38560.31581.2210.1339

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in sediment at Gabbard 2 (Thames)


Raw data with assessment

Raw data with assessment of  lead in sediment at Gabbard 2 (Thames)


Assessment plot

Assessment plot for  lead in sediment at Gabbard 2 (Thames)


Metals data

Metals data for assessment of  lead in sediment at Gabbard 2 (Thames)


Metals assessment

Metals assessment of  lead in sediment at Gabbard 2 (Thames)


Related pages

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