set terminal png size 1024,768
my_width=0.25
set yrange[0:100]
set autoscale ymax
set style line 1 lt 1 lw 50
set xtics 2
set style fill pattern border
set boxwidth my_width
set style fill solid border -1
set xtic nomirror rotate
set bmargin 7
set key outside
my_index=
-1
set title "
"
set ylabel "
"
set output "
.png"
set xtics (
"
"
,
)
plot
'histograms.data' index my_index using 1:
+1 title "" with boxes fs pattern
,