Category: space_group
Data type: numb
Enumeration range: 1.1 -> infinity
Superspace group number from International Tables for Crystallography, Vol. C. Valid only for one-dimensional modulated structures. Ref: International Tables for Crystallography, Vol. C, First edition (1992) pp. 797-835 or: International Tables for Crystallography, Vol. C, Second edition (1999) pp. 899-937