Unicode and "fitted"

A Unicode oddity about "fitted" numbers I've found something disconcerting.
The range of "fitted" numbers is between U+F639 and U+F642.
However, I notice that it immediately goes from zero.fitted (U+F639) to two.fitted (U+F63A): what about the number 1?

Thank you
m

Comments

  • Thomas Phinney
    Thomas Phinney Posts: 3,168
    Those are private use area (PUA) codepoints, not standard Unicode. What is the source — a specific font, perhaps one of Adobe’s?