set grid
plot "output/barbot_map_5000" using ($1/100.0):($2/100.0):($3*0.4) w p pt 7 ps variable lc 1 t '', \
"output/barbot_map_500000" using ($1/10.0) :($2/10.0) :($3*0.7+0.3) w p pt 7 ps variable lc 3 t ''
pause mouse keypress