This file helps translate between the J_#_# numbers in the grid_x_y filenames
and the atom names you expect based on protein structure.

I'm not listing them all.  See the figure in this directory for more.  

The figure is from:

http://pubs.rsc.org/en/content/articlehtml/2011/cp/c1cp20520j#fig1

6	C
10	O
11	N
12	HN
13	CA
14	HA
15	CB
16	C
20	O
21	N
22	H

So... 
HN-HA is 12_14