Projects

CSEMP assessment of benzo[a]pyrene in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean158.9261.92-26.4652.92
linear260.2166.61-26.1052.210.715 10.3977
smooth (df = 2)361.9874.48-25.9951.980.224 10.6363

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200520132.34262.0651-0.2775 0.3255-0.8520.4222
last 20 years200520132.34262.0651-0.2775 0.3255-0.8520.4222

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 7.9 30.01.3360.209 6.3820.0002
ERL 7.9430.03.9990.20919.101<0.0001

 


Related pages

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