Projects

CSEMP assessment of lead in sediment at Forth Estuary

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean175.3376.53-34.6669.33
linear277.1279.40-34.5669.120.211 10.6457
smooth (df = 2)378.9682.80-34.4868.960.162 10.6874
smooth (df = 3)480.8686.86-34.4368.860.092 10.7616
smooth (df = 4)582.0890.99-34.0468.080.779 10.3775

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020174.1594.2250.065910.143410.4600.6520
last 20 years200020174.1594.2250.065910.143410.4600.6520

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC68.3538.00-0.5871 0.0861-6.8181.0000
ERL68.3547.00-0.3745 0.0861-4.3490.9998

 


Related pages

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