Key points are not available for this paper at this time.
High-resolution, high signal-to-noise ratio (〈S/N〉 = 85) spectra have been obtained for five stars, CD -24°17504, CD -38°245, CS 22172-002, CS 22885-096, and CS 22949-037, having Fe/H ≲ -3.5 according to previous lower S/N material. LTE model at
Norris et al. (Sat,) studied this question.