Relative Humidity And Vapor Amount At Jezero Crater L. K. Tamppari, Jet Propulsion Laboratory/California Institute Of Technology, Pasadena, Ca, Usa (Leslie.Tamppari@Jpl.Nasa.Gov), G. Martínez, Lunar And Planetary Institute, Houston, Tx, Usa, J. A. Rodríguez-Manfredi, Centro De Astrobiologia (Inta-Csic), Madrid, Spain, M. De La Torre-Juárez, Jet Propulsion Laboratory/California Institute Of Technology, Pasadena, Ca, Usa, M. Hieta, J. Polkko, I. Jaakonaho, M. Genzer, A.-M. Harri, Finnish Meteorological Institute, Helsinki, Finland, T. Mcconnochie, Space Science Institute, Boulder, Co, Usa, F. Montmessin, Latmos, Guyancourt, France, M. Smith, Nasa Goddard Space Flight Center, Greenbelt, Md, Usa, M. Wolff, Space Science Institute, Boulder, Co, Usa, E. Fischer, University Of Michigan, Ann Arbor, Mi, Usa, P. Conrad, Carnegie Institution Of Science, Washington, D.C., Usa, F. Gómez, M.-P. Zorzano, And D. Viudez-Moreiras, Centro De Astrobiologia (Inta-Csic), Madrid, Spain, P. Patel, Jet Propulsion Laboratory/California Institute Of Technology, Pasadena, Ca, Usa, M. Lemmon, Space Science Institute, Boulder, Co, Usa, And The Meda Team. Introduction: Near-Surface Water Content And Relative Humidity Are Important For Understanding The Overall Column Distribution Of Water, The Exchange With The Surface And Near-Subsurface, The Potential For Brine Or Frost Formation, And General Modern Habitability Potential Of The Local Environment (See E.G., [1-3]). Humidity Sensors Have Been Used On Phoenix, Msl, And Now Perseverance To Gain This Understanding. The Perseverance Meda Relative Humidity