extract fields from string using multiple-space delimiter?

Hi, I'm trying to parse out the fields from the column title line of a
table, which has the following format:

"Var 1 [units] Var 2 [units] Var 3 [units]"

Each column title is separated by at least two spaces, and never only
one space. However, to the best of my understanding, the functions
str_fields_count and str_get_field cannot use multiple consecutive
spaces (or multiple consecutive anything) as a delimiter, without also
couting single spaces as a delimiter. Is there any way in NCL to parse
out fields from a string using double spaces but *NOT* single spaces as
a delimiter?

Jared

-- 
================
Dr. Jared A. Lee
Postdoctoral Research Scientist
National Center for Atmospheric Research
Phone: 303.497.8485
Email: jaredlee@ucar.edu
Web: https://staff.ucar.edu/users/jaredlee
================
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