You'll need to be clearer about what 'reading' means in this context. Trying
to interpret non-uniform tables is the devil's work at the best of times.
'999999' is Word's internal value for 'mixed'-- You get that value whenever
what you're looking at has mixed values: eg, font size if you select text of
different sizes, or in your case, column width if there is more than one
width in the range you're looking at.