benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 nrid Northridge_LS_6172-1, 1994-01-20,  E C ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.621, 1.6667, 30, 153130
 nrid Northridge_LS_6172-1, 1994-01-21,  E C ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.624, 1.6697, 30, 1740
 nrid Northridge_LS_6172-1, 1994-01-22,  GDH ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.3489, 1.3967, 30, 15540
 nrid Northridge_LS_6172-1, 1994-01-23,  JMS ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.1316, 1.1818, 30, 161530
 nrid Northridge_LS_6172-1, 1994-02-02,  MWC ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 0.944, 0.9971, 30, 460
 nrid Northridge_LS_6172-1, 1994-02-15,  KWC ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.1406, 1.1907, 30, 23130
 nrid Northridge_LS_6172-1, 1994-03-15,  WKG ,  USGS ,  ASHTECH,  104 ,  LM-XII3 7A,  ASH700228D,  1068,  NONE, 1.3016, 1.3499, 30, 145330
 nrid Northridge_LS_6172-1, 1994-05-18,  GDH ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.1275, 1.1778, 30, 234230
 nort, 1994-11-04,  KWC ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E001,  ASH700228A,  0718,  NONE, 1.0045, 1.0565, 30, 152230
 nrid Northridge_LS_6172-1, 1995-01-31,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E00,  ASH700228A,  0718,  NONE, 1.2292, 1.2783, 30, 16230
 nrid Northridge_LS_6172-1, 1995-12-04,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.19, 1.2395, 30, 16430
 nrid Northridge_LS_6172-1, 1996-12-05,  GDH ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1E95,  ASH700228D,  1058,  NONE, 1.1306, 1.1808, 30, 164030
 nrid Northridge_LS_6172-1, 1996-12-06,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700228A,  0598,  NONE, 1.2091, 1.2584, 30, 164330
 nrid Northridge_LS_6172-1, 1998-03-12,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14244,  NONE, 1.1953, 1.2447, 30, 16280
 nrid Northridge_LS_6172-1, 1998-03-13,  JMS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.1447, 1.1947, 30, 16230
 nrid Northridge_LS_6172-1, 1999-05-18,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.17, 1.2197, 30, 1610
 nrid Northridge_LS_6172-1, 1999-05-20,  JMS ,  USGS ,  ASHTECH,  LP03464 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.2156, 1.2648, 30, 15400
 nrid Northridge_LS_6172-1, 2001-04-17,  CHS ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.2267, 1.2758, 30, 15490
 nrid Northridge_LS_6172-1, 2001-04-18,  JMS ,   ,  ASHTECH,  *LP00108 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993705,  NONE, 1.0555, 1.1067, 30, 153930