benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 b285, 1998-09-18,  WRT ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936D_M,  *874,  NONE, 1.4932, 1.5398, 30, 154530
 b285 B285_stmpd_149_FMK_1, 2002-09-11,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 0.5783, 0.6418, 30, 153530
 b285 B285_stmpd_149_FMK_1, 2002-09-14,  WCH ,  USGS MENLO PARK ,  TRIMBLE,  3616A15408 ,  4000SSI NP,  TRM22020.00+GP,  0220051647,  NONE, 1.4338, 0, 30, 161930
 b285 B285_stmpd_149_FMK_1, 2004-05-13,  JMS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 0.5511, 0.6159, 30, 154730
 b285 B285_stmpd_149_FMK_1, 2004-05-14,  JLS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.243, 1.2919, 30, 15350