benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 u698, 1999-09-18,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.5274, 1.5738, 30, 155430
 u698, 1999-09-21,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.5536, 1.5998, 30, 155830
 u698 U698_1984_NGS, 2003-06-30,  WCH ,  USGS ,  ASHTECH,  LP02232 ,  Z-XII3 6J00,  ASH701945B_M,  CR619992801,  NONE, 1.343, 1.3909, 30, 154340
 u698 U698_1984_NGS, 2003-07-03,  CWW ,  USGS ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 1.4771, 1.5239, 30, 1610
 u698 U698_1984_NGS, 2008-10-18,  JLS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII 1L00,  ASH700936D_M,  CR14341,  NONE, 1.1752, 1.2249, 30, 15200
 u698 U698_1984_NGS, 2008-10-23,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII 1L00,  ASH700936D_M,  CR14341,  NONE, 1.3783, 1.4259, 30, 15360
 u698 U698_1984_NGS, 2014-09-21,  WRT ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.4318, 1.4789, 15, 16515
 u698 U698_1984_NGS, 2014-10-25,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.9356, 0.9888, 15, 164915