benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 bull Bull_USGS, 1992-05-27,  KWC ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.1406, 1.1907, 30, 3150
 bull Bull_USGS, 1992-10-20,  JMS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6M24,  ASH700228A,  0745,  NONE, 1.1345, 1.1847, 30, 17510
 bull Bull_USGS, 1993-10-10,  CHS ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.1557, 1.2056, 30, 17510
 bull Bull_USGS, 1994-02-01,  CHS ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.191, 1.2405, 30, 390
 bull Bull_USGS, 1994-05-11,  KWC ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.1577, 1.2076, 30, 1500
 bull Bull_USGS, 1995-02-07,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E00,  ASH700228A,  0718,  NONE, 1.1306, 1.1808, 30, 154930
 bull Bull_USGS, 1995-10-19,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1F00,  ASH700228D,  1068,  NONE, 1.1849, 1.2345, 30, 16530
 bull Bull_USGS, 1996-04-19,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 1.1608, 1.2107, 30, 16290
 bull Bull_USGS, 1997-02-25,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E95,  ASH700228D,  1036,  NONE, 1.2272, 1.2763, 30, 17930
 bull Bull_USGS, 1997-02-26,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700228D,  1068,  NONE, 1.2704, 1.319, 30, 165130
 bull Bull_USGS, 1998-04-25,  JMS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14244,  NONE, 1.1447, 1.1947, 30, 16200
 bull Bull_USGS, 1998-04-26,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.2075, 1.2568, 30, 15440
 bull Bull_USGS, 2000-03-02,  CHS ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.1974, 1.2468, 30, 174130
 bull Bull_USGS, 2000-03-03,  JMS ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.1315, 1.1817, 30, 163730