Hi - I hope this is the right place to post this iotbx.reflection_statistics returns space group 195 for a scalepack 'no merge original index' .sca file for space group 123 (i.e space group 197) the first line of the .sca file is 12 i23 the CCP4 program scala can output a 'no merge original index' format file, which has all 24 i23 symmetry operators in the header - but iotbx.reflection_statistics cannot read that either cheers Peter Metcalf