code: def altz_to_utctz_str(altz):
      
      utci = -1 * int((float(altz) / 3600) * 100)
      utcs = str(abs(utci))
      utcs = "0" * (4 - len(utcs)) + utcs
      prefix = (utci < 0 and '-') or '+'
      return prefix + utcs
docs: As above, but inverses the operation, returning a string that can be used
      in commit objects