Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean193.89 95.89-43.9487.89
linear287.83 91.83-39.9279.838.053 10.0045
smooth (df = 2)388.24 95.38-39.1278.241.593 10.2069
smooth (df = 3)490.21102.21-39.1078.210.034 10.8543

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920185.3324.006-1.3263 0.3928-3.3770.0070
last 20 years199920185.3324.006-1.3263 0.3928-3.3770.0070

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 54.91 16.00-1.2330 0.2588-4.7640.9996
ERL 54.91261.00 1.5589 0.2588 6.024<0.0001

 


Related pages

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