I wanted to work out the edge-jump ratio between the L3 and L2 edges of Ca using Hephaestus. I ran into two problems: 1. The ratio implied by what it says for the unit-edge-step thickness does not agree with that derived by computing the absorption (cm^2/gm) above and below each edge and dividing the difference (L3+ - L3-)/(L2+ - L2-). 2. The results differ wildly depending on which resource I use: L3-.1 L3+.1 L2-.1 L2+.1 (L1+ - L1-)/(L2+ - L2-) Elam 4759.796 27837.796 27478.018 38434.277 2.106375908 Chantler 4322.6 6547.121 32827.61 35436.543 0.852655473 Cromer-Leiberman 4288.524 33471.375 32786.294 47072.991 2.042659055 The Henke table doesn't yield an L2 edge jump at all, while the Shaltout yields the same results as Cromer-Leiberman. Which one should I trust and why? This is old-style H. (V0.18), not Demeter. mam