Chris Scott:
,
Good point. Many African countries, I now see, are not fully compliant with WGS84...
What's the likely maximum error in their published coordinates? (Am hoping it's less than 100 metres.)
I can't answer that other than to relate the errors in the continental U.S. before they made the conversion.
On the coasts it was as little as a couple of feet.
In Kansas it was as large as 1,000 feet, or so, in longitude, but much less in latitude.