CSEMP assessment of benzo[a]anthracene in sediment at inner (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
linear2111.46115.01-51.73103.462.107 10.1466
smooth (df = 2)3112.79119.04-51.40102.790.665 10.4146
smooth (df = 3)4113.27123.56-50.64101.271.517 10.2180

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
last 20 years200220185.0235.7970.77390.51091.5150.1580

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC329.3 16.0-3.0244 0.3115-9.7091.0000
ERL329.3261.0-0.2324 0.3115-0.7460.7644


Related pages

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