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Impact of ozone on the growth of sitka spruce trees.
data(sitka89)
A dataframe
size of the tree measured in \(log(height*diamter^2)\)
days after the 1st january, 1988
id number of a tree
ozone: grown under ozone environment, control: ozone free
# NOT RUN { data(sitka89) # } # NOT RUN { <!-- %attach(sitka89) --> # }
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