- The UTM zone is the first two digits.
- The latitude bands, the letter, omit "I" (India) and "O" (Oscar) because of
the possibility of confusion with numbers "1" and "0".
- The patterns of the boundaries, which are parallels and
meridians, says a lot about this map's projection. This is a
UTM projection, which is generally not used for such a large area,
for which a conic would be better.