Projects

CSEMP assessment of lead in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-13.87-10.279.94-19.87
linear2-11.88 -3.889.94-19.880.006 10.9370
smooth (df = 2)3 -9.91 6.769.95-19.910.028 10.8676

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620133.09833.0841-0.01421 0.17771-0.0800.9389
last 20 years200620133.09833.0841-0.01421 0.17771-0.0800.9389

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC21.8538.000.55350.11045.0160.0012
ERL21.8547.000.76610.11046.9420.0002

 


Related pages

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