Files like m0.8_fehm1.55_y25_ap4_a09_co_jina_zahb_diff.dontrk contain evolutionary tracks
from the ZAMS to the RGB tip. They provide age in Myr, log g, log L/Lsun, log Teff, MHe,
and Mcc. In the file name m is the initial mass (e.g., 0.8 Msun), fehm is the metallicity
([Fe/H]=-1.55), y is the initial He mass fraction (Y0=0.25), ap4 is the alpha-enhancement 
([alpha/Fe]=+0.4), a09 is the initial mix (a09 for Asplund et al. 2009, gs98 for Grevesse 
& Sauval 1998), co means that CO-enahnced (Type 2) opacity tables have been used, jina means 
that the JINA Reaclib reaction rates have been used, diff means that He diffusion has been 
included in the MS and SGB models.

If a file also has *_Op2_* in its name, this means that the initial O abundance has been
increased by 0.2dex compared to other alpha alements, i.e. [O/Fe] = [alpha/Fe] + 0.2. 

zahb_diff_*.dat files contain corresponding ZAHB data with the ZAHB mass, log L/Lsun, and
log Teff.

*.tar files contain all the corresponding HB evolutionary tracks in the form i#.dontrk,
where # is the consecutive number of the track. The columns in the files i#.dontrk
provide the same data as in the file m0.8_fehm1.55_y25_ap4_a09_co_jina_zahb_diff.dontrk.