The Stratospheric Aerosol and Gas Experiment II has one channel at 940 nm related to water vapor. Two inversion procedures were developed independently in order to obtain the water vapor profile: the Chahine method by the Langley Research center, and the Mill method by the Laboratoire d'Optique Atmosph¿rique. Comparisons were made between these two algorithms and some results are presented at mid-latitudes (~45¿N) and tropical latitudes (12¿S--25¿S). They are compared with in situ frost point hygrometer data provided by balloon experiments from the Laboratoire de M¿t¿orologie Dynamique. At ¿0.5 ppmv, agreement between the inversion results and the experimental results was obtained in the altitude range from 18--19 to 26--27 km. Below 18--19 km and above 26--27 km the error is larger (sometimes 1 ppmv and more). ¿ American Geophysical Union 1993