Projects

CSEMP assessment of benzo[a]pyrene in sediment at Forth Estuary

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean175.9678.21-34.9869.96
linear277.7182.28-34.8669.710.249 10.6178
smooth (df = 2)378.0286.35-34.0168.021.693 10.1931
smooth (df = 3)479.9094.30-33.9567.900.121 10.7277

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020185.3594.970-0.3891 0.7754-0.5020.6278
last 20 years200020185.3594.970-0.3891 0.7754-0.5020.6278

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC144.1 30.0-1.5690 0.4583-3.4230.9962
ERL144.1430.0 1.0935 0.4583 2.3860.0204

 


Related pages

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