set xlabel "runs"
set ylabel "seconds"
plot [0:] [0:] \
'times-$t.log' using 2 title 'ISAM-$t(real)' with linespoints, \
'times-$t.log' using 3 title 'ISAM-$t(user)' with linespoints, \
'times-$t.log' using 4 title 'ISAM-$t(sys)' with linespoints
set xlabel "runs"
set ylabel "seconds"
plot [0:] [0:] \
'times-$t.log' using 2 title 'ISAM-$t(real)' with linespoints, \
'times-$t.log' using 3 title 'ISAM-$t(user)' with linespoints, \
'times-$t.log' using 4 title 'ISAM-$t(sys)' with linespoints