plot "archer-onetep-imkl.dat" using ($2/$3) index 3 ti '\tt{fourier\_interpolate}', \
"archer-onetep-imkl.dat" using ($2/$3) index 4 ti '\tt{fourier\_interpolate\_product}', \
"archer-onetep-imkl.dat" using ($2/$3):xtic(problem_label(strcol(1),strcol(4))) index 2 ti "aggregate"
set nokey
set yrange [0.8:1.3]
plot "archer-onetep-imkl.dat" using ($2/$3) index 3 ti '\tt{fourier\_interpolate}', \
"archer-onetep-imkl.dat" using ($2/$3) index 4 ti '\tt{fourier\_interpolate\_product}', \
"archer-onetep-imkl.dat" using ($2/$3):xtic(problem_label(strcol(1),strcol(4))) index 2 ti "aggregate"
set nokey
set yrange [0.8:1.3]