Projects

CSEMP assessment of lead in biota at Gabbard (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean190.84 93.41-42.4284.84
linear292.84 98.17-42.4284.840.005 10.9438
smooth (df = 2)394.50104.50-42.2584.500.337 10.5618
smooth (df = 3)495.64113.64-41.8283.640.859 10.3539

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120173.7073.680-0.0269 0.3798-0.0710.9453
last 20 years200120173.7073.680-0.0269 0.3798-0.0710.9453

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 39.6 26.0-0.422 0.229-1.8440.9488
EC 39.61500.0 3.634 0.22915.892<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Gabbard (Thames)


Raw data with assessment

Raw data with assessment of  lead in biota at Gabbard (Thames)


Assessment plot

Assessment plot for  lead in biota at Gabbard (Thames)


Metals data

Metals data for assessment of  lead in biota at Gabbard (Thames)


Metals assessment

Metals assessment of  lead in biota at Gabbard (Thames)


Related pages

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