The POSIX utility pr called as pr -e -t
does exactly what you want and AFAIK is present in every Unix installation.
$ cat file
ABC 1437 1 0 71 15.7 174.4
DEF 0 0 0 1 45.9 45.9
GHIJ 2 3 0 9 1.1 1.6
$ pr -e -t file
ABC 1437 1 0 71 15.7 174.4
DEF 0 0 0 1 45.9 45.9
GHIJ 2 3 0 9 1.1 1.6
and with the tabs visible as ^I
s:
$ cat -ET file
ABC^I1437^I1^I0^I71^I15.7^I174.4$
DEF^I0^I0^I0^I1^I45.9^I45.9$
GHIJ^I2^I3^I0^I9^I1.1^I1.6$
$ pr -e -t file | cat -ET
ABC 1437 1 0 71 15.7 174.4$
DEF 0 0 0 1 45.9 45.9$
GHIJ 2 3 0 9 1.1 1.6$
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