International
Tables for
Crystallography
Volume G
Definition and exchange of crystallographic data
Edited by S. R. Hall and B. McMahon

International Tables for Crystallography (2006). Vol. G. ch. 5.6, p. 552

Table 5.6.3.2 

P. J. Ellisa and H. J. Bernsteinb*

a Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, CA 94025, USA, and bDepartment of Mathematics and Computer Science, Kramer Science Center, Dowling College, Idle Hour Blvd, Oakdale, NY 11769, USA
Correspondence e-mail:  yaya@bernstein-plus-sons.com

Table 5.6.3.2 | top | pdf |
Structure of compressed data using the CCP4-style scheme

Value in bits 3 to 5 Number of bits in each error
0 0
1 4
2 5
3 6
4 7
5 8
6 16
7 65

Byte Value
1 to 8 Number of elements (64-bit little-endian number)
9 to 16 Minimum element (currently unused)
17 to 24 Maximum element (currently unused)
25 to 32 (Reserved for future use)
33 … Coded data