Projects

CSEMP assessment of lead in sediment at Irish Sea Buoy

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-19.77-18.1312.88-25.77
linear2-18.23-15.0313.12-26.230.464 10.4958
smooth (df = 2)3-16.52-10.9713.26-26.520.288 10.5915
smooth (df = 3)4-14.60 -5.6013.30-26.600.084 10.7717

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920123.2653.208-0.05742 0.08422-0.6820.5083
last 20 years199920123.2653.208-0.05742 0.08422-0.6820.5083

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC24.7238.000.43000.025416.943<0.0001
ERL24.7247.000.64250.025425.318<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in sediment at Irish Sea Buoy


Raw data with assessment

Raw data with assessment of  lead in sediment at Irish Sea Buoy


Assessment plot

Assessment plot for  lead in sediment at Irish Sea Buoy


Metals data

Metals data for assessment of  lead in sediment at Irish Sea Buoy


Metals assessment

Metals assessment of  lead in sediment at Irish Sea Buoy


Related pages

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