benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 f270 F270_stmpd_V35_1934_, 1992-10-20,   ,   ,  TURBOROGUE,  122 ,   ,  AOAD/M_T,  118,  NONE, 0.8749, 0, 30, 15320
 f270 F270_stmpd_V35_1934_, 1992-10-21,   ,   ,  TURBOROGUE,  122 ,   ,  AOAD/M_T,  118,  NONE, 0.8749, 0, 30, 0
 f270, 1996-09-28,  T.S ,  USGS ,  ASHTECH,  347 ,  Z-XII3 1G00,  unknown,  *163,  NONE, 1.3355, 0, 30, 15450
 f270, 1998-09-26,  JTB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.1893, 1.2388, 30, 15480
 f270 F270_stmpd_V35_1934_, 2002-09-15,  JH.AM ,  USGS MENLO PARK ,  TRIMBLE,  3335A03898 ,  4000SSE NP,  TRM22020.00+GP,  0220126940,  NONE, 1.2522, 0, 30, 154630
 f270 F270_stmpd_V35_1934_, 2002-09-18,  MCN ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992801,  NONE, 1.2733, 1.3219, 30, 153230