:%!column -t

will convert

1.33570301776, 3.61194e-06, 7.24503e-06, -9.91572e-06, 1.25098e-05, 0.0102828
1.34538754675, 3.3689e-06, 9.86066e-06, -9.12075e-06, 1.18058e-05, 0.00334344
1.34808186291, -1.99011e-06, 6.53026e-06, -1.18909e-05, 9.52337e-06, 0.00158065

to

1.33570301776,  3.61194e-06,   7.24503e-06,  -9.91572e-06,  1.25098e-05,  0.0102828
1.34538754675,  3.3689e-06,    9.86066e-06,  -9.12075e-06,  1.18058e-05,  0.00334344
1.34808186291,  -1.99011e-06,  6.53026e-06,  -1.18909e-05,  9.52337e-06,  0.00158065

It also works on visual selection

:'<,'>!column -t

Ref:- https://stackoverflow.com/questions/1229900/reformat-in-vim-for-a-nice-column-layout

• https://stackoverflow.com/questions/3569997/how-to-find-out-line-endings-in-a-text-file → https://stackoverflow.com/a/3570051

:set fileencoding=utf8
:w myfilename

Ref:- https://stackoverflow.com/questions/9310274/how-can-i-use-vim-to-convert-my-file-to-utf8

%s/29/\r29/gc

will insert a new line before each occurrence of 29.

• https://stackoverflow.com/questions/71323/how-to-replace-a-character-by-a-newline-in-vim

nmap J :s/\n/, /^M

• https://vi.stackexchange.com/a/14248/12620