checkCIF procedure

PLAT906

 Scale Factors (i.e. K = Mean[F(obs)**2] / Mean [F(calc)**2]) for selected
 groups of reflections, as listed in the Analysis of Variance Section #7 of
 the FCF validation report, are expected to have a value of about 1.000.
 Strong deviations should be investigated, acted upon or explained. (see also
 SHELXL manual). For details see the Analysis-of-Variance Section 7 in the
 validation '.ckf' file.