"hist2.dat" with lp lt 1 title "2 byte messages", \
"hist4.dat" with lp lt 2 title "4 byte messages", \
"hist6.dat" with lp lt 3 title "6 byte messages", \
"hist2.dat" with lp lt 1 title "2 byte messages", \
"hist4.dat" with lp lt 2 title "4 byte messages", \
"hist6.dat" with lp lt 3 title "6 byte messages", \