benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 xyzz XYZ_NCER_unstamped_19, 1992-02-20,  GDH ,  USGS ,  ASHTECH LM-XII3,  107,  6A,  ASH700228D,  *031,  NONE, 1.2916, 1.34, 30, 74430
 xyzz XYZ_NCER_unstamped_19, 1993-01-20,  GDH ,  USGS ,  ASHTECH LM-XII3,  764,  6M24,  ASH700228A,  0598,  NONE, 1.1668, 1.2166, 30, 115530
 xyzz, 1994-04-26,  JMS ,  USGS ,  ASHTECH LM-XII3,  764,  7A,  ASH700228A,  0598,  NONE, 1.2393, 1.2882, 30, 13470
 xyzz XYZ_NCER_unstamped_19, 1995-06-29,  KWC ,  USGS ,  ASHTECH Z-XII3,  O4582,  1E00,  ASH700228D,  1068,  NONE, 1.3066, 1.3548, 30, 155530
 xyzz XYZ_NCER_unstamped_19, 1996-06-26,  JMS ,  USGS ,  ASHTECH Z-XII3,  4600,  1F00,  ASH700228D,  1036,  NONE, 1.3076, 1.3558, 30, 16160
 xyzz XYZ_NCER_unstamped_19, 1997-12-09,  JMS ,  USGS ,  ASHTECH Z-XII3,  O4579,  1E95,  ASH700936D_M,  CR14341,  NONE, 1.3166, 1.3648, 30, 17250