This archive contains raw, reduced, and higher-level instrument altimetry data
acquired during Lunar Reconaissance Orbiter (LRO) spacecraft operations.
The observations are carried out using the Lunar Orbiter Laser Altimeter 
(LOLA) instrument.

The LOLA archive is stored on two volumes. Raw data are stored on this volume,
designated LROLOL_0XXX. Reduced and higher-level data are stored on the volume
designated LROLOL_1XXX.

Earth ranges are stored in Consolidated Ranging Data records on other volumes.