This Dataset is related to the manuscript "Reduced floating-point precision in regional climate simulations: An ensemble-based statistical verification" (Banderier et al., submitted). It contains spatially averaged test results for all five tests described in the manuscript : Identical, Single Precision, and all three Modified Diffusion experiments, for all ten years and 100 random selections. This Dataset also contains the final decisions, step d of the methodology, based on thresholding at the 95th percentile of the control rejections vs. the mean of the test rejections (see article for details).