International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by S. R. Hall and B. McMahon © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. G. ch. 5.3, p. 511
Section 5.3.5.2.1.2. Constraining standard uncertainties to specified ranges
a
International Union of Crystallography, 5 Abbey Square, Chester CH1 2HU, England |
Some journals require that standard uncertainties in experimental values should be quoted within a specified range. Typically the standard uncertainty (s.u.) should be quoted as an integer in parentheses, modifying the last place or two of decimals in the experimental data, and with a value between 2 and 19. cif2cif permits s.u. values in the ranges 1–9, 2–19 or 3–29, selectable by a command-line switch. The effect of applying the `rule of 19' would be to change a value of 1.458(1) in the input CIF to 1.4580(10) in the output.