Projects

CSEMP assessment of lead in sediment at Lyme Bay

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean16.64 8.14-0.32 0.64
linear25.70 8.61 1.15 -2.302.933 10.0868
smooth (df = 2)36.4911.49 1.76 -3.511.213 10.2707
smooth (df = 3)47.4215.42 2.29 -4.581.065 10.3020
smooth (df = 4)52.8715.12 5.57-11.136.558 10.0104

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920163.7414.1350.39400.21511.8310.0900
last 20 years199920163.7414.1350.39400.21511.8310.0900

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC62.4938.00-0.4973 0.1283-3.8770.9990
ERL62.4947.00-0.2848 0.1283-2.2200.9776

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in sediment at Lyme Bay


Raw data with assessment

Raw data with assessment of  lead in sediment at Lyme Bay


Assessment plot

Assessment plot for  lead in sediment at Lyme Bay


Metals data

Metals data for assessment of  lead in sediment at Lyme Bay


Metals assessment

Metals assessment of  lead in sediment at Lyme Bay


Related pages

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