The data files provide the prepared distributions of the mean velocities, Reynolds normal, and shear stresses of the publication:
Ruck, S. and Arbeiter, F. LDA measurements in a one-sided ribbed square channel at Reynolds numbers of 50 000 and 100 000, Experiments in Fluids.
The publication reports on Laser Doppler Anemometry (LDA) measurements in the fully developed turbulent flow through a one-sided rib-roughened square channel with a rib-height-to-channel-height ratio of k/H = 0.0667 and a rib-pitch-to-rib-height ratio of p/k = 9 at Reynolds numbers of Re = 50 000 and 100 000. Please refer to the article above when using the data.