Projects

CSEMP assessment of copper in sediment at Sea of Hebrides

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-12.46-10.21 9.23-18.46
linear2-10.93 -6.36 9.47-18.930.473 10.4918
smooth (df = 2)3-12.40 -4.0711.20-22.403.468 10.0626
smooth (df = 3)4-11.32 3.0811.66-23.320.921 10.3373

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620162.86252.7245-0.13800 0.19874-0.6940.5050
last 20 years200620162.86252.7245-0.13800 0.19874-0.6940.5050

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC15.2527.000.57130.11584.9350.0004
ERL15.2534.000.80190.11586.927<0.0001

 


Raw data with supporting information

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


Raw data with assessment

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


Assessment plot

Assessment plot for  copper in sediment at Sea of Hebrides


Metals data

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


Metals assessment

Metals assessment of  copper 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