ASCII files of f_abc coefficients for Li to Si (Z=3-14) GCR species

Full ASCII tables of f_abc coefficients, ranking the most important reactions for the production of for Li to Si GCR species (one file per GCR element). These coefficients are defined and these files are used in the paper "Current status and desired accuracy of the isotopic production cross-sections relevant to astrophysics of cosmic rays - II. Fluorine to Silicon (and updated LiBeB)".