Profiles of the latitudinal distribution of middle atmospheric density and temperature have been obtained from a ground based remote sensing instrument. A two color Rayleigh/Raman lidar, built at Penn State University, was part of the LADIMAS (Latitudinal Distribution of Middle Atmospheric Structure) campaign. The goal was to measure density, temperature, and trace constituents from the troposphere to the thermosphere on a global scale. Measurements were taken from 70° North to 65° South latitude during a three month period between September 1991 and January 1992. The data provides a unique opportunity to study the latitudinal variations of the mean temperature and the variability in the atmospheric structure. Comparisons of the atmospheric conditions to models, such as the CIRA atmospheric model, were made to study the deviations.