Projects

CSEMP assessment of zinc in biota at Canvey Island (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean113.9015.40-3.95 7.90
linear210.5613.47-1.28 2.565.342 10.0208
smooth (df = 2)311.9416.94-0.97 1.940.624 10.4295
smooth (df = 3)4 6.6014.60 2.70-5.407.333 10.0068
smooth (df = 4)5 7.8420.09 3.08-6.160.763 10.3825

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall1999201710.315 9.688-0.6270 0.2476-2.5320.0250
last 20 years1999201710.315 9.688-0.6270 0.2476-2.5320.0250

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC1612510269-0.4512 0.1573-2.8680.9934

 


Raw data with supporting information

Raw data with supporting information for assessment of  zinc in biota at Canvey Island (Thames)


Raw data with assessment

Raw data with assessment of  zinc in biota at Canvey Island (Thames)


Assessment plot

Assessment plot for  zinc in biota at Canvey Island (Thames)


Metals data

Metals data for assessment of  zinc in biota at Canvey Island (Thames)


Metals assessment

Metals assessment of  zinc in biota at Canvey Island (Thames)


Related pages

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