(a)
   Galactocentric distance, assuming that the sun is exactly 10 kpc from the
     galactic center.

(b)
   Otherwise unlabeled numbers are HD or HDE numbers. An "A", "B", "C", or "D"
     after the ID indicates a component of a multiple system. Two such letters
     (e.g. "AB") indicate the data are for unresolved components.

(c)
   Includes full classifications, such as "III((N))" and indications of
     peculiarities, such as weak lines.

(e)
   A value of "0.00" in either B-V or U_B originally meant either that no
     color was listed or that the true color was 0. Regrettably, the two cases
     were indistinguishable. This situation has been fixed for U-B; however,
     all true zero values may not have been identified. Non-zero colors in
     both fields are reliable.

(f)
   Absolute V magnitude using observed V, extinction and adopted distance of
     the association.

(g)
   Identifies which cluster the star is in. The code should be a number from
     2 to 79, with the possibility of a letter in byte 121.

(h)
   Unchanged from Buscombe, this is usually a cluster membership note,
     alternate ID (especially when the primary ID is a CP or CPD number), or
     multiplicity reminder. As with primary IDs, otherwise unlabeled numbers
     are HD or HDE numbers.