# NOT RUN {
## Make test data available
data(ad.test)
attach(ad.test)
## Plot analytical duplicate analyses as a time-series
ad.plot2(Cu, ifalt = TRUE)
## Plot analytical duplicate analyses versus duplicate means,
## annotating more appropriately, with a 20% maximum tolerance
ad.plot2(Cu, "Cu (mg/kg)", if.order = FALSE, ad.tol = 20, ifalt = TRUE)
## Detach test data
detach(ad.test)
# }
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