CSEMP assessment of zinc in sediment at inner (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
linear237.6740.14-14.8429.672.723 10.0989
smooth (df = 2)334.6738.84-12.3324.675.005 10.0253
smooth (df = 3)432.3538.90-10.1820.354.318 10.0377
smooth (df = 4)534.0243.82-10.0120.020.331 10.5651

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
last 20 years199920165.1445.3530.209150.108161.9340.0736

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC211.29122.00-0.5492 0.0895-6.1341.0000
ERL211.29150.00-0.3426 0.0895-3.8260.9991


Related pages

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