Projects

CSEMP assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean155.9858.23-24.9949.98
linear256.6961.26-24.3548.69 1.292 10.2556
smooth (df = 2)358.4366.76-24.2148.43 0.265 10.6070
smooth (df = 3)449.4163.81-18.7137.4111.012 10.0009

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620184.3704.114-0.25620 0.20517-1.2490.2433
last 20 years200620184.3704.114-0.25620 0.20517-1.2490.2433

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 61.16 16.00-1.3409 0.1233-10.8711.0000
ERL 61.16261.00 1.4510 0.1233 11.764<0.0001

 


Related pages

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