benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 roc2 Rock_2_1954_USGS, 1992-02-20,  JMS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6A,  ASH700228A,  0745,  NONE, 1.1064, 1.1569, 30, 8150
 roc2 roc2 Rock_2_1954_USG, 1993-01-20,  JMS ,  USGS ,  ASHTECH,  099 ,  LM-XII3 6M24,  ASH700228D,  1036,  NONE, 1.3629, 1.4106, 30, 1780
 roc2 Rock_2_1954_USGS, 1993-03-16,  GDH ,  USGS ,  ASHTECH,  099 ,  LM-XII3 6M24,  ASH700228D,  1036,  NONE, 1.2996, 1.3479, 30, 31330
 roc2, 1994-04-26,  GDH ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.198, 1.2474, 30, 1400
 roc2 Rock_2_1954_USGS, 1995-06-28,  GDH ,  USGS ,  ASHTECH,  830 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.2785, 1.327, 30, 16450
 roc2 Rock_2_1954_USGS, 1996-06-10,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 1.3137, 1.3619, 30, 16360
 roc2 Rock_2_1954_USGS, 1997-12-10,  GDH ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.3378, 1.3857, 30, 16400
 roc2 Rock_2_1954_USGS, 1997-12-18,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.3923, 1.4397, 30, 163230
 roc2 Rock_2_1954_USGS, 1999-01-19,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.4357, 1.4828, 30, 165630
 roc2 Rock_2_1954_USGS, 1999-01-20,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936E_C,  CR16980,  NONE, 1.254, 1.3028, 30, 1730
 roc2 Rock_2_1954_USGS, 2001-02-06,  CHS ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.4014, 1.4488, 30, 18430
 roc2 Rock_2_1954_USGS, 2001-02-08,  JMS ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.4508, 1.4978, 30, 165030
 roc2 Rock_2_1954_USGS, 2004-03-31,  GDH ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE00,  ASH701945B_M,  CR519993702,  NONE, 1.2733, 1.3219, 30, 164730
 roc2 Rock_2_1954_USGS, 2004-04-01,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.2976, 1.3459, 30, 16260