Projects

CSEMP assessment of lead in sediment at Sea of Hebrides

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean180.1782.42-37.0974.17
linear282.0386.60-37.0174.030.145 10.7030
smooth (df = 2)381.4589.78-35.7271.452.580 10.1082
smooth (df = 3)482.3596.75-35.1870.351.094 10.2957

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620163.5313.440-0.09095 0.23796-0.3820.7112
last 20 years200620163.5313.440-0.09095 0.23796-0.3820.7112

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC31.1938.000.19740.13841.4260.0937
ERL31.1947.000.41000.13842.9620.0079

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in sediment at Sea of Hebrides


Raw data with assessment

Raw data with assessment of  lead in sediment at Sea of Hebrides


Assessment plot

Assessment plot for  lead in sediment at Sea of Hebrides


Metals data

Metals data for assessment of  lead in sediment at Sea of Hebrides


Metals assessment

Metals assessment of  lead in sediment at Sea of Hebrides


Related pages

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