System Index out of Range Exception

[SKE]

I am referring our previous XAML that splits through space as an array. Url is available here : Notepad to Excel write .
Because of "system index out of range exception " we went to list to split and store the data. Now the list needs to be converted back in to fixed size array of (5).

Again i am not using row space delimiter - data itself formatted like a row . below data contains 4 rows.
0000000 01 0000123.00 0000000 02 0000124.00
0000000 03 0000126.00 0000000 04 0000127.00
0000000 05 0000129.00 0000000 06 0000130.00
0000000 07 0000145.00

Now list needs to be converted to fixed size array.

Thanks for your extended support.