The ground state of an oxygen atom is a triplet, with the following fine structure:

\[
\varepsilon_{J=2}=\varepsilon_{J=1}-158.5 \mathrm{~cm}^{-1}=\varepsilon_{J=0}-226.5 \mathrm{~cm}^{-1} .
\]

Calculate the relative fractions of the atoms occupying different \(J\)-levels in a sample of atomic oxygen at \(300 \mathrm{~K}\).