benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 n843 N_843, 1999-05-12,   ,   ,  TRIMBLE 4000SSE,  7286,  7.28,  4000ST,  115395,  L1/L2, 2, 0, 30, 151930
 n843 N_843, 2000-09-13,  APS ,   ,  ASHTECH,  174 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.5308, 0.5966, 30, 16450
 n843 N_843, 2000-09-21,  APS ,   ,  ASHTECH,  174 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.5043, 0.5715, 30, 154430
 n843 N_843_1947_USC&GS, 2004-09-15,  JRM ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.2116, 1.2609, 30, 154930
 n843 N_843_1947_USC&GS, 2004-09-16,  MV_ ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1722, 1.2219, 30, 171930
 n843 N_843_1947_USC&GS, 2004-09-22,  FFP ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.1074, 1.1579, 30, 16230
 n843 N_843_1947_USC&GS, 2009-09-14,  SRW ,  USGS ,  ASHTECH,  04579 ,  Z-XII 1L001,  ASH701945B_M,  CR519993706,  NONE, 1.3188, 1.3669, 30, 155230
 n843 N_843_1947_USC&GS, 2009-09-15,  CWW ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L001,  ASH700936D_M,  CR14330,  NONE, 1.0079, 1.0599, 30, 16430