how to display real numbers

Hi,
my matrix looks smth like this:

Channel Occurrences Difference MinDiff MaxDiff wItself
1.0000 3.0000 0.0954 0.0747 0.1078 0.8576
1.0000 3.0000 0.1241 0.1011 0.1615 1.0000
1.0000 1.0000 0.1096 0.1096 0.1096 1.0000
1.0000 1.0000 0.1299 0.1299 0.1299 0.8838
2.0000 1.0000 0.0731 0.0731 0.0731 0.9010
2.0000 2.0000 0.1083 0.0894 0.1271 1.0000
2.0000 2.0000 0.1068 0.0894 0.1242 1.0000
3.0000 1.0000 0.0655 0.0655 0.0655 0.2820
3.0000 1.0000 0.1588 0.1588 0.1588 0.3912
3.0000 1.0000 0.1055 0.1055 0.1055 0.3912
3.0000 1.0000 0.3830 0.3830 0.3830 0.6154
4.0000 1.0000 0.0643 0.0643 0.0643 0.6347
4.0000 2.0000 0.2785 0.1161 0.4409 0.7843
5.0000 1.0000 0.1594 0.1594 0.1594 0.5940
5.0000 1.0000 0.3793 0.3793 0.3793 0.4867

I would like to display first two columns of it as real numbers (I
mean as 1, 2, 3, etc, and not 1.000, 2.000). But at the same time to
keep all other columns in it's current number format.
How do I do that?
.