benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 rail Rail_A_250_Reset_194, 1994-06-02,  KWC ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.3479, 1.3958, 30, 151630
 rail Rail_A_250_Reset_194, 1995-09-11,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E00,  ASH700228A,  0598,  NONE, 1.2171, 1.2663, 30, 173730
 rail Rail_A_250_Reset_194, 1996-10-22,  GDH ,  USGS ,  ASHTECH,  275 ,  Z-XII3 1E86,  ASH700228A,  1026,  NONE, 1.1416, 1.1917, 30, 16260
 rail Rail_A_250_Reset_194, 1997-09-08,  GDH ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14330,  NONE, 1.1832, 1.2328, 30, 174530
 rail Rail_A_250_Reset_194, 1997-09-09,  GDH ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14330,  NONE, 1.1629, 1.2127, 30, 15550
 rail Rail_A_250_Reset_194, 1998-11-17,  GDH ,  USGS ,  ASHTECH,  306 ,  Z-XII3 4J90,  ASH700936E_C,  CR16909,  NONE, 1.0748, 1.1258, 30, 171430
 rail Rail_A_250_Reset_194, 1998-11-18,  GDH ,  USGS ,  ASHTECH,  306 ,  Z-XII3 4J90,  ASH700936E_C,  CR16909,  NONE, 1.0798, 1.1307, 30, 154830
 rail Rail_A_250_Reset_194, 2000-04-16,  GDH ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993705,  NONE, 1.1407, 1.1908, 30, 154330
 rail Rail_A_250_Reset_194, 2000-04-17,  JMS ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1923, 1.2418, 30, 15330