CSEMP assessment of c1 phenanthrenes in sediment at SE of Bressay (Shetland)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean183.52 88.02-38.7677.52
linear284.84 95.51-38.4276.840.677 10.4105
smooth (df = 2)386.70111.70-38.3576.700.145 10.7030

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620162.43711.9538-0.4834 0.5840-0.8280.4455
last 20 years200620162.43711.9538-0.4834 0.5840-0.8280.4455

Status assessment

No assessment criteria


Related pages

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