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GLAS/ICESat L1A Global Laser Pointing Data (HDF5), Version 33
Level-1A global laser pointing data (GLAH04) contain two orbits of attitude data from the spacecraft star tracker, instrument star tracker, gyro, and laser reference system, and other spacecraft attitude data required to calculate precise laser pointing.
For information about Version 33, see the NSIDC ICESat Description of Data Releases page.