%0 Journal Article
%T Analysis of multicrystal pump-probe data sets. II. Scaling of ratio data sets.
%A Fournier B
%A Sokolow J
%A Coppens P
%J Acta Crystallogr A Found Adv
%V 72
%N 0
%D Mar 2016
%M 26919377
%F 2.331
%R 10.1107/S2053273315024055
%X Two methods for scaling of multicrystal data collected in time-resolved photocrystallography experiments are discussed. The WLS method is based on a weighted least-squares refinement of laser-ON/laser-OFF intensity ratios. The other, previously applied, is based on the average absolute system response to light exposure. A more advanced application of these methods for scaling within a data set, necessary because of frequent anisotropy of light absorption in crystalline samples, is proposed. The methods are applied to recently collected synchrotron data on the tetra-nuclear compound Ag2Cu2L4 with L = 2-diphenylphosphino-3-methylindole. A statistical analysis of the weighted least-squares refinement residual terms is performed to test the importance of the scaling procedure.