Projects

CSEMP assessment of c3 dibenzothiophenes in sediment at outer (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1117.77119.16-55.89111.77
linear2111.73114.40-51.86103.73 8.042 10.0046
smooth (df = 2)3102.64107.18-46.32 92.6411.090 10.0009
smooth (df = 3)4104.63111.83-46.32 92.63 0.008 10.9268
smooth (df = 4)5105.88116.77-45.94 91.88 0.751 10.3861

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020173.2312.414-0.8172 0.1931-4.2320.0010
last 20 years200020173.2312.414-0.8172 0.1931-4.2320.0010

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