Projects

CSEMP assessment of lead in biota at Crosby (Mersey Channel)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1 3.58 5.831.21 -2.42
linear2 4.31 8.881.84 -3.691.267 10.2604
smooth (df = 2)3 1.10 9.434.45 -8.905.216 10.0224
smooth (df = 3)4-1.5712.836.79-13.574.670 10.0307

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020187.3246.958-0.3663 0.3176-1.1530.2786
last 20 years200020187.3246.958-0.3663 0.3176-1.1530.2786

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC1051.6 211.9-1.6019 0.1749-9.1571.0000
EC1051.61500.0 0.3552 0.1749 2.0300.0364

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Crosby (Mersey Channel)


Raw data with assessment

Raw data with assessment of  lead in biota at Crosby (Mersey Channel)


Assessment plot

Assessment plot for  lead in biota at Crosby (Mersey Channel)


Metals data

Metals data for assessment of  lead in biota at Crosby (Mersey Channel)


Metals assessment

Metals assessment of  lead in biota at Crosby (Mersey Channel)


Related pages

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