index residue atom-type mean(depth) stdev(depth) 3993 C:3 N 2.97 0.2 3994 C:3 CA 2.97 0.33 3995 C:3 C 3.86 -2.16896e+09 3996 C:3 O 3.44 -2.16896e+09 3997 C:3 OXT 2.85 0.17 3998 C:3 H 2.92 0.25