CSEMP assessment of phenanthrene in sediment at SE of Bressay (Shetland)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean193.62 98.12-43.8187.62
linear295.31105.98-43.6587.310.308 10.5786
smooth (df = 2)397.29122.29-43.6487.290.021 10.8860

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620162.06081.6752-0.3856 0.6926-0.5570.6017
last 20 years200620162.06081.6752-0.3856 0.6926-0.5570.6017

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 5.34 32.001.7910.4424.0540.0049
ERL 5.34240.003.8050.4428.6160.0002


Related pages

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