benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 b230 B230_stmpd_W383_1955, 1992-10-07,   ,   ,  TURBOROGUE,  111 ,   ,  AOAD/M_T,  111,  NONE, 1.1317, 0, 30, 1540
 b230, 1996-09-19,  T.S ,  USGS ,  ASHTECH,  347 ,  Z-XII3 1G00,  unknown,  *163,  NONE, 1.3335, 0, 30, 15430
 b230, 1998-09-17,  JTB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.2419, 1.2908, 30, 152530
 b230, 2000-08-19,  GDH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.1204, 1.1708, 30, 17100
 b230, 2000-08-20,  JMS ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 0.4338, 0.5055, 30, 14530
 b230 B230_stmpd_W383_1955, 2002-09-09,  BW ,  USGS MENLO PARK ,  TRIMBLE,  3407A05141 ,  4000SSE NP,  TRM22020.00+GP,  0220051874,  NONE, 1.196, 0, 30, 155630
 b230 B230_stmpd_W383_1955, 2002-09-10,  MCN ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992801,  NONE, 1.2622, 1.3109, 30, 152830