-plot "../20110925/cleaner.data" using 0:(($1+$2+$5)/1024**2) with boxes fill solid 0.0 lt 1 title "Reclaimed", \
- "../20110925/cleaner.data" using 0:(($1+$2-$3+$5)/1024**2) with boxes fill solid 0.2 lt 1 title "Wasted", \
- "../20110925/cleaner.data" using 0:(($1)/1024**2) with boxes fill solid 0.4 lt 1 title "Rewritten", \
- "../20110925/cleaner.data" using 0:(($1-$5)/1024**2) with boxes fill solid 0.6 lt 1 title "Used/Unaltered"
+set xtics 1
+set xrange [0.5:14.5]
+set grid noxtics
+plot "../20110925/cleaner.data" using ($0+1):(($1+$2+$5)/1024**2) with boxes fill solid 0.0 lt 1 title "Reclaimed", \
+ "../20110925/cleaner.data" using ($0+1):(($1+$2-$3+$5)/1024**2) with boxes fill solid 0.2 lt 1 title "Wasted", \
+ "../20110925/cleaner.data" using ($0+1):(($1)/1024**2) with boxes fill solid 0.4 lt 1 title "Rewritten", \
+ "../20110925/cleaner.data" using ($0+1):(($1-$5)/1024**2) with boxes fill solid 0.6 lt 1 title "Used/Unaltered"