Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean148.8651.43-21.4342.86
linear249.6154.94-20.8141.611.249 10.2637
smooth (df = 2)351.1361.13-20.5641.130.481 10.4879
smooth (df = 3)452.7170.71-20.3640.710.417 10.5186

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200520181.98392.58180.59790.51851.1530.2822
last 20 years200520181.98392.58180.59790.51851.1530.2822

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 13.2 30.00.8190.3592.2850.0258
ERL 13.2430.03.4820.3599.712<0.0001

 


Related pages

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