* To prevent XDS from trying to find a better space group than the one with the lowest R<sub>meas</sub> (often P1), you could just use MAX_FAC_Rmeas= 1.0 | * To prevent XDS from trying to find a better space group than the one with the lowest R<sub>meas</sub> (often P1), you could just use MAX_FAC_Rmeas= 1.0 |