This repository holds crossover and aneuploidy data for 31,228 human sperm genomes sequenced with Sperm-seq. Data are described in the preprint/paper "Insights about variation in meiosis from 31,228 human sperm genomes." Several levels of data are available, e.g., each crossover (allcrossovers_hg38.txt.gz) and the numbers of crossovers detected per sperm cell (numbercrossoverspercell.txt.gz). Each data file is described in its own readme, so README_allgainsdivisionoforigin.txt explains the data present in allgainsdivisionoforigin.txt. All files are either text files or text files compressed via gzip. All data was generated as described in the preprint/paper, using scripts available in the companion repository (DOI: 10.5281/zenodo.2581596).