In order to get the bonus in each column you need to average 3 or more of each number.
If you can't do it, you want to put the lower numbers in the first column.
The reason for that is that you get a bonus of 35 if you total 63 or more in the first column;
but you get a bonus of 70 if you get 126 in the second column;
and a bonus of 105 if you total 189 in the third column.
The first column reflects the real total of each of those rolls.
In the second column the value of your roll is doubled;
and in the third column, the value of the roll is tripled.