set yrange [0:109]
set xrange [-2:37]
set grid x
set grid y
set xlabel "Column"
set ylabel "% of chips with code 94 (qdamin=6)"
set boxwidth 0.6
plot "j06_qda_col" using 1:4 title "jun2006 wafer 71" with boxes, "j06_qda_col" using 1:3 title "Rel.# of chips" with histeps lw 4
pause -1
set terminal png
set output "j06_qda_cm.png"
replot