Syntheses for the BA grid were made outside of standard APOGEE synthesis pipeline by Carlos Allende Prieto, who supplied the data files (*.dat) in this directory. These were used to populate a uniformly spaced BA grid fits file in solarisotopes/sBA. This was then convolved with a "combo" LSF to produce the grids used for DR17 in solarisotopes/sBA_lsfcombo5_l33 (APO) and sBA_lsfcombo5s_l33 (LCO). Only a single LSF library was used, at least partly motivated by the fact that the lines are generally intrinsically broad. These grids cover four dimensions : Teff, logg, [M/H], and vsini