benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 h104 HPGN_10-04_Calif_Sta, 1993-02-03,  KWC ,  USGS ,  ASHTECH,  763 ,  LM-XII3 6M24,  ASH700228A,  0718,  NONE, 1.3368, 1.3848, 30, 83630
 h104 HPGN_10-04_Calif_Sta, 1993-03-18,  KWC ,  USGS ,  ASHTECH,  107 ,  LM-XII3 6M24,  ASH700228D,  *031,  NONE, 1.2201, 1.2692, 30, 9430
 h104 HPGN_10-04_Calif_Sta, 1994-01-12,  KWC ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.5176, 1.564, 30, 1980
 h104 HPGN_10-04_Calif_Sta, 1999-03-17,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14244,  NONE, 1.3015, 1.3498, 30, 18030
 h104 HPGN_10-04_Calif_Sta, 1999-03-18,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14244,  NONE, 1.1994, 1.2488, 30, 1720
 h104 HPGN_10-04_Calif_Sta, 2001-05-02,  JMS ,   ,  ASHTECH,  801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993705,  NONE, 1.3015, 1.3498, 30, 15420
 h104 HPGN_10-04_Calif_Sta, 2001-05-03,  JMS ,   ,  ASHTECH,  801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993705,  NONE, 1.3015, 1.3498, 30, 10
 h104 HPGN_10-04_Calif_Sta, 2005-04-05,  CHS ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.344, 1.3919, 30, 14490
 h104 HPGN_10-04_Calif_Sta, 2005-04-06,  CHS ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.341, 1.3889, 30, 143830
 h104 HPGN_10-04_Calif_Sta, 2013-02-06,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.4328, 1.4799, 15, 164915
 h104 HPGN_10-04_Calif_Sta, 2013-02-07,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.4661, 1.513, 15, 17415
 h104 HPGN_10-04_Calif_Sta, 2019-02-27,  ELP ,  USGS ,  JAVAD,  01660 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00585,  NONE, 1.2622, 1.3109, 15, 18115
 h104 HPGN_10-04_Calif_Sta, 2019-02-28,  ELP ,  USGS ,  JAVAD,  01660 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00585,  NONE, 1.1894, 1.2389, 15, 145930