outputtin a spreadsheet of float values

[Skaperen]

i am going to output an array of float values in the form of a spreadsheet. but i do have some extra space horizontally. should my output try to line up numbers so the fraction marks line up? normally numbers would have some narrow cells an have to line up like

Output:
           1.3456789
           1234567.9

but if i have more space i can widen the cells and do (lining up the decimal points)

Output:
         1.346789
   1234567.9

is it worth the effort to line the numbers that way? most cases will have just 4 columns and the smallest overall width is 80. my aim is for easy readability. the units are electrical parameters.