Utilities Matrix TimesTable [ravel].sm (14.37 KiB) downloaded 663 time(s).

This data set is erroneous from source ... OK: visible.
Much populated data set, especially imported may contain typos.
Here, ravel(M) detects the typo error.
I know no other method to sanity/proof data set.

Utilities Matrix TimesTable [ravel].sm (110.07 KiB) downloaded 613 time(s).