benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 e843, 2000-09-13,  FFP ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 1.1255, 1.1758, 30, 17130
 e843, 2000-09-23,  CHS ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.1751, 1.2248, 30, 152030
 e843 E843_1967_USC&GS, 2004-09-15,  MV_ ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1205, 1.1708, 30, 16030
 e843 E843_1967_USC&GS, 2004-09-19,  RWB ,  USGS ,  TRIMBLE,  21140 ,  4000SSI NP,  TRM29659.00,  05208,  NONE, 0.9958, 0, 0, 15590
 e843 E843_1947_USC&GS, 2009-09-11,  SRW ,  USGS ,  ASHTECH,  04579 ,  Z-XII 1L001,  ASH701945B_M,  CR519993706,  NONE, 1.2056, 1.2549, 30, 155130
 e843 E843_1947_USC&GS, 2009-09-12,  FFP ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L001,  ASH701945B_M,  CR519993703,  NONE, 1.1924, 1.2419, 30, 15570