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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
linear269.9580.62-30.9861.950.139 10.7089
smooth (df = 2)366.9591.95-28.4756.955.008 10.0252

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620161.50021.2435-0.2567 0.6847-0.3750.7230
last 20 years200620161.50021.2435-0.2567 0.6847-0.3750.7230

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 3.4727.002.05240.43064.7670.0025
ERL 3.4734.002.28290.43065.3020.0016


Related pages

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