Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean147.2248.50-20.6141.22
linear248.1750.63-20.0840.171.048 10.3060
smooth (df = 2)344.4448.61-17.2234.445.726 10.0167
smooth (df = 3)446.3952.94-17.2034.390.052 10.8201
smooth (df = 4)548.2558.05-17.1234.250.141 10.7070

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200020172.36152.1636-0.19790 0.19029-1.0400.3148
last 20 years200020172.36152.1636-0.19790 0.19029-1.0400.3148

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 8.70325.0001.05520.11349.307<0.0001

 


Raw data with supporting information

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


Raw data with assessment

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


Assessment plot

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


Metals data

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


Metals assessment

Metals assessment of  arsenic 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