benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 1315 Q1315_1977_NGS, 1998-07-07,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4869,  NP,  TRM22020.00+GP,  76725,  NONE, 2, 0, 15, 153115
 1315 Q1315_1977_NGS, 1998-07-08,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4869,  NP,  TRM22020.00+GP,  76725,  NONE, 2, 0, 15, 201715
 1315 Q1315_1977_NGS, 1998-07-09,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4869,  NP,  TRM22020.00+GP,  76725,  NONE, 2, 0, 15, 201315
 1315 Q1315_1977_NGS, 2007-10-23,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR520031615,  NONE, 0.7102, 0.7688, 30, 1660
 1315 Q1315_1977_NGS, 2007-10-24,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR520031615,  NONE, 0.6409, 0.7019, 30, 155630
 1315 Q1315_1977_NGS, 2008-10-28,  JMS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L00,  ASH700936D_M,  CR14329,  NONE, 0.645, 0.7059, 30, 162230
 1315 Q1315_1977_NGS, 2008-10-29,  JMS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L00,  ASH700936D_M,  CR14329,  NONE, 0.645, 0.7059, 30, 30
 1315 Q1315_1977_NGS, 2010-05-26,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.9499, 1.0029, 15, 152645
 1315 Q1315_1977_NGS, 2011-10-21,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.4499, 1.4969, 15, 155445