This is the dataset of water vapor vertical distributions on Mars measured by ExoMars-TGO/NOMAD. This is presented in "Global vertical distribution of water vapor on Mars: Results from 3.5 years of ExoMars-TGO/NOMAD science operations" by S. Aoki, A.C. Vandaele, F. Daerden et al. Each file name indicates the year, month, date, and time of the measurement, and diffraction order. Each file contains 9 columns: 1st Column: Altitude above areoid [km] 2nd Column: Water vapor volume mixing ratio [ppm] 3rd Column: Error in water vapor mixing ratio [ppm] 4th Column: Water vapor number density [1/cm3] 5th Column: Error in water vapor number density [1/cm3] 6th Column: Solar Longitude [degree] 7th Column: Latitude [degree] 8th Column: Longitude [degree] 9th Column: Local time [hrs] We encourage you to contact us when you use this dataset or you have a question. Contact: Shohei Aoki (e-mail: shohei.aoki @ edu.k.u-tokyo.ac.jp; aoki.shohei @ jaxa.jp; shohei.aoki @ aeronomie.be)