benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 f291, 1996-09-28,  JMS ,  USGS ,  ASHTECH,  275 ,  Z-XII3 1E86,  ASH700228A,  1026,  NONE, 1.192, 1.2415, 30, 1670
 f291, 1998-09-26,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936E_C,  CR16116,  NONE, 1.4448, 1.4918, 30, 152630
 f291 F291_stmpd_Delta_SE_, 2002-09-17,  BW ,  USGS MENLO PARK ,  TRIMBLE,  3318A03053 ,  4000SSE NP,  TRM22020.00+GP,  0220126940,  NONE, 1.3696, 0, 30, 17540
 f291 F291_stmpd_Delta_SE_, 2002-09-18,  JMS ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.4308, 1.4779, 30, 14570