This project contains the dataset for the manuscript 'Transient mutation bias facilitates rapid and predictable adaptation toward optimal peaks on an empirical genotype-phenotype landscape' by James S. Horton, Shani UP. Ali, and Tiffany B. Taylor. Users are welcome to download these data for academic scrutiny but may not repurpose or reuse this data without permission from the corresponding authors (J. S. Horton and T. B. Taylor).