benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 j789, 1999-09-19,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.4448, 1.4918, 30, 15440
 j789, 1999-09-28,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.5043, 1.5509, 30, 154630
 j789 J789_1988_NGS, 2003-06-21,  JMS ,  USGS ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.4842, 1.5309, 30, 153730
 j789 J789_1988_NGS, 2003-06-23,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH700936D_M,  CR14333,  NONE, 1.4015, 1.4489, 30, 153030
 j789 J789_1988_NGS, 2008-10-28,  EYI ,  USGS/Cascades Volcan,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  12354066,  NONE, 1.413, 1.4672, 15, 22345
 j789 J789_1988_NGS, 2008-10-30,  EYI ,  USGS/Cascades Volcan,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  12354066,  NONE, 1.5635, 1.6168, 15, 144545
 j789 J789_1988_NGS, 2014-09-08,  SAH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 0.4759, 0.5448, 15, 171045
 j789 J789_1988_NGS, 2014-10-21,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993706,  NONE, 1.2531, 1.3019, 15, 15045