Projects

CSEMP assessment of phenanthrene in sediment at Fladen Ground

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean168.0670.63-31.0362.06
linear270.0375.36-31.0162.030.033 10.8564
smooth (df = 2)370.7680.76-30.3860.761.269 10.2599
smooth (df = 3)472.6290.62-30.3160.620.143 10.7052

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200520181.95722.03430.07700.42510.1810.8607
last 20 years200520181.95722.03430.07700.42510.1810.8607

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 7.65 32.001.4310.302 4.7380.0007
ERL 7.65240.003.4460.30211.407<0.0001

 


Related pages

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