benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 tab3 Table_3_1941_USC&GS, 2001-07-15,  GDH ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH700936D_M,  CR14341,  NONE, 1.1538, 1.2037, 30, 10
 tab3 Table_3_1941_USC&GS, 2001-07-16,  GDH ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH700936D_M,  CR14341,  NONE, 1.1538, 1.2037, 30, 10
 tab3 Table_No3_1941_USC&G, 2004-07-21,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR620022602,  NONE, 1.1681, 1.2179, 30, 0
 tab3 Table_No3_1941_USC&G, 2004-07-22,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR620022602,  NONE, 1.1681, 1.2179, 30, 0
 tab3 Table_No3_1941_USC&G, 2004-07-23,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR620022602,  NONE, 1.1681, 1.2179, 30, 0