benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 b410 B410_1983_NGS, 1995-03-24,  KWC ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E00,  ASH700228D,  1068,  NONE, 1.3388, 1.3867, 30, 16270
 b410 B410_1983_NGS, 1995-03-25,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1E00,  ASH700228A,  0745,  NONE, 1.385, 1.4325, 30, 154530
 b410 B410_1983_NGS, 1996-02-13,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.5212, 1.5676, 30, 164630
 b410 B410_1983_NGS, 1996-02-16,  JMS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.4245, 1.4717, 30, 165430
 b410 B410_1983_NGS, 1997-11-01,  JMS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.4166, 1.4638, 30, 16500
 b410 B410_1983_NGS, 1997-11-02,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.3146, 1.3628, 30, 14830
 b410 B410_1983_NGS, 1999-04-23,  JLS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936E_C,  CR16116,  NONE, 1.1397, 1.1898, 30, 154630
 b410 B410_1983_NGS, 1999-04-24,  CHS ,  USGS ,  ASHTECH,  LP03450 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.4609, 1.5078, 30, 144630
 b410 B410_1983_NGS, 2002-06-08,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.4025, 1.4499, 30, 15320
 b410 B410_1983_NGS, 2002-06-09,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.4409, 1.4879, 30, 14480