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The Atmospheric Visibility Monitoring (AVM) program at the Jet Propulsion Laboratory has been in place for the last few years to obtain atmospheric transmission statistics data to support free-space optical communications experiments ancl missions. Atmospheric transmission data is collected through a set of three autonomous systems, all located in the south-western U.S., that observe selected stars throughout the year. Data from these three sites are collected and processed on a regular basis to obtain cumulative distribution functions of atmospheric attenuation for different spectral windows of interest. In this paper, we describe recent work on creation of a database using Microsoft Access to analyze atmospheric transmission data collected by the AVM project. The database, which replaces time-consuming Matlab programs, offers a rapid and extremely easy way to extract and analyze AVM data. Keywords: Atmospheric visibility, Atmospheric transmission, Atmospheric attenuation, Cloud-cover statistics, Free- space Optical Communication, Laser Communication, Link Budget, AVM, CDF, PDF

<title>Analysis of data from the Atmospheric Visibility Monitoring (AVM) program</title>