set grid
set xlabel "Time [s]"
set ylabel "Latency [ms]"
-plot [:] [:500] \
+plot [:] [:0.5] \
"len2-msgs.txt" using 2:(1000*$14) with points title "2 byte messages", \
"len4-msgs.txt" using 2:(1000*$14) with points title "4 byte messages", \
"len6-msgs.txt" using 2:(1000*$14) with points title "6 byte messages", \