Projects

CSEMP assessment of benzo[a]pyrene in sediment at middle (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1103.72105.97-48.8697.72
linear2104.23108.80-48.1296.23 1.491 10.2221
smooth (df = 2)3103.17111.50-46.5893.17 3.065 10.0800
smooth (df = 3)4 93.55107.95-40.7881.5511.617 10.0007

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620184.1744.6750.50100.40811.2280.2506
last 20 years200620184.1744.6750.50100.40811.2280.2506

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC107.2 30.0-1.2740 0.2402-5.3040.9998
ERL107.2430.0 1.3886 0.2402 5.7820.0001

 


Related pages

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