file data to list

[Anish Chapagain]

Hi!!
I am facing problem for extracting file data to the list so as to have
graph plotted through list.
my file(eg: data.txt) is having data like this,

cnt0001a 29000 xretya 01
cnt0002a 29850 brishal 02
cnt0003a 31250 kristal 03

from here, I need to copy data 29000, 29850, 31250 into a single list
and
01, 02, 03 to another so as to plot graph using these value.

regard's
NepaliWorld