Table 1. PABA Form I Face Areas and Numbers of Atoms on Faces Encountered by a Probe.

face	area/Å2	atoms	atom number scaled to area	HB donors	HB donors scaled to area	HB acceptors	HB acceptors scaled to area
(100)	69.296	20	70.29	3	89.38	4	71.2
(010)	343.824	98	344.4	10	297.92	19	338.20
(001)	69.273	14	49.2	5	148.96	5	89.0
error			0.033		0.152		0.033