benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 g280 G280_stmpd_E50_6815, 1992-10-21,   ,   ,  TURBOROGUE,  111 ,   ,  AOAD/M_T,  111,  NONE, 0.8506, 0, 30, 19280
 g280 G280_stmpd_E50_6815, 1992-10-22,   ,   ,  TURBOROGUE,  111 ,   ,  AOAD/M_T,  111,  NONE, 0.7771, 0, 30, 15570
 g280, 1996-09-29,  JMS ,  USGS ,  ASHTECH,  275 ,  Z-XII3 1E86,  ASH700228A,  1026,  NONE, 1.1165, 1.1669, 30, 183630
 g280, 1998-09-27,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936E_C,  CR16116,  NONE, 1.166, 1.2158, 30, 175530
 g280 G280_stmpd_E50_6815, 2002-09-14,  WRT ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 1.2177, 1.2669, 30, 1690
 g280 G280_stmpd_E50_6815, 2002-09-19,  BW ,  USGS MENLO PARK ,  TRIMBLE,  3335A03898 ,  4000SSE NP,  TRM22020.00+GP,  0220126940,  NONE, 1.1598, 0, 30, 161330