Table 7.

Analysis of the centered orthorhombic Bravais lattices in NIST Crystal Data. The total number of organic compounds in all 44 reduced forms is 133 613 out of which 2978 have centered orthorhombic lattices

No.	Bravais lattice	Reduced form No.	ALLa	Monoclinicb	Orthorhombicc	% Lower symmetry
1	OId	8	28	3	25	10.7
2	OC	13	737	159	578	21.6
3	OF	16	265	22	243	8.3
4	OI	19	188	19	169	10.1
5	OC	23	327	158	169	48.3
6	OF	26	386	22	364	5.7
7	OC	36	237	109	128	46.0
8	OC	38	442	154	288	34.8
9	OC	40	232	139	93	59.9
10	OI	42	136	11	125	8.1
		Sum =	2978	796	2182

^aTotal number of compounds with specified reduced form.

^bNumber of compounds reported as monoclinic. For these compounds, the crystal symmetry is less than the metric symmetry.

^cNumber of compounds reported as orthorhombic. For these compounds, the crystal symmetry is equal to the metric symmetry.

^dOrthorhombic I- centered (i.e., 1st letter = system; 2nd letter = centering).