index residue atom-type mean(depth) stdev(depth) 1 P:7 N 2.93 0.21 2 P:7 CA 3.28 0.38 3 P:7 C 2.94 0.23 4 P:7 O 2.92 0.21 5 P:7 CB -2.16896e+09 -2.16896e+09 6 P:7 CG1 3.1 0.24 7 P:7 CG2 2.84 0.16 8 P:7 CD1 2.99 0.25