Jeremy Sakstein

My collaborators and I also found this issue when trying to interpolate the r_c12_ag_o16 using this table: [deboer_median_old.txt](https://github.com/MESAHub/mesa/files/8931295/deboer_median_old.txt) We reproduced the Steffen Interpolation routine that MESA uses (https://ui.adsabs.harvard.edu/abs/1990A&A...239..443S) in Mathematica...