available_RGTs          Reference Ground Tracks (RGTs)
degrees_to_global_grid
                        Create a global grid based on degrees
getTracks               Get the ICESAT-2 Tracks
get_atlas_data          Get IceSat-2 ATLAS data for a specific Date
get_level3a_data        Get IceSat-2 ATLAS 'Level-3A' data for a time
                        interval (up to 1 year)
overall_mission_orbits
                        Overall Mission Orbits
revisit_time_RGTs       Revisit Time Reference Ground Tracks and Dates
select_aoi_global_grid
                        R6 Class to Select an Area of Interest (AOI)
                        from a Global Grid
time_specific_orbits    Time Specific Orbits
