index residue atom-type mean(depth) stdev(depth) 49405 c:2 N 2.87 0.2 49406 c:2 CA 3.08 0.26 49407 c:2 C -2.55 1.67 49408 c:2 O -2.63 1.37 49409 c:2 CB 2.92 0.23