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 Z-XII3,  O4579,  CC00,  ASH701945B_M,  CR519993702,  NONE, 1.1255, 1.1758, 30, 17130
 e843, 2000-09-23,  CHS ,   ,  ASHTECH Z-XII3,  4600,  CD00,  ASH700936D_M,  CR14333,  NONE, 1.1751, 1.2248, 30, 152030
 e843 E843_1967_USC&GS, 2004-09-15,  MV_ ,  USGS ,  ASHTECH Z-XII3,  LP019992803,  CD00,  ASH700936D_M,  CR14341,  NONE, 1.1205, 1.1708, 30, 16030
 e843 E843_1967_USC&GS, 2004-09-19,  RWB ,  USGS ,  TRIMBLE 4000SSI,  21140,  NP,  TRM29659.00,  05208,  NONE, 1.0475, 0, 0, 15590
 e843 E843_1947_USC&GS, 2009-09-11,  SRW ,  USGS ,  ASHTECH Z-XII,  04579,  1L001D04,  ASH701945B_M,  CR519993706,  NONE, 1.2056, 1.2549, 30, 155130
 e843 E843_1947_USC&GS, 2009-09-12,  FFP ,  USGS ,  ASHTECH Z-XII,  LP019992804,  1L001D04,  ASH701945B_M,  CR519993703,  NONE, 1.1924, 1.2419, 30, 15570