Projects

CSEMP assessment of lead in sediment at outer (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean164.3465.63-29.1758.34
linear261.4863.94-26.7453.484.865 10.0274
smooth (df = 2)354.5958.75-22.2944.598.891 10.0029
smooth (df = 3)456.3062.84-22.1544.300.289 10.5910
smooth (df = 4)555.1364.93-20.5641.133.170 10.0750

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020174.6103.854-0.7553 0.2627-2.8750.0122
last 20 years200020174.6103.854-0.7553 0.2627-2.8750.0122

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC47.238.0-0.21678 0.21615-1.0030.8335
ERL47.247.0-0.00421 0.21615-0.0190.5076

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in sediment at outer (Firth of Clyde)


Raw data with assessment

Raw data with assessment of  lead in sediment at outer (Firth of Clyde)


Assessment plot

Assessment plot for  lead in sediment at outer (Firth of Clyde)


Metals data

Metals data for assessment of  lead in sediment at outer (Firth of Clyde)


Metals assessment

Metals assessment of  lead in sediment at outer (Firth of Clyde)


Related pages

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