benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 g230 G230_stmpd_X50_1934_, 1992-10-21,   ,   ,  TURBOROGUE,  133 ,   ,  AOAD/M_T,  133,  NONE, 1.2986, 0, 30, 152930
 g230 G230_stmpd_X50_1934_, 1992-10-22,   ,   ,  TURBOROGUE,  T127 ,   ,  AOAD/M_T,  122,  NONE, 0.9234, 0, 30, 15210
 g230 G230_stmpd_X50_1934_, 1992-10-23,   ,   ,  TURBOROGUE,  T127 ,   ,  AOAD/M_T,  122,  NONE, 0.9234, 0, 30, 0
 g230, 1996-09-29,  T.S ,  USGS ,  ASHTECH,  347 ,  Z-XII3 1G00,  unknown,  *163,  NONE, 1.3719, 0, 30, 15330
 g230, 1998-09-28,  CHS ,  USGS ,  ASHTECH,  LP03362 ,  Z-XII3 CB00,  ASH700936E_C,  CR16379,  NONE, 1.2186, 1.2678, 30, 14530
 g230 G230_stmpd_X50_1934_, 2002-09-16,  BW ,  USGS MENLO PARK ,  TRIMBLE,  3318A03053 ,  4000SSE NP,  TRM22020.00+GP,  0220126940,  NONE, 1.1106, 0, 15, 155945
 g230 G230_stmpd_X50_1934_, 2002-09-17,  JH ,  USGS MENLO PARK ,  TRIMBLE,  3427A06745 ,  4000SSE NP,  TRM22020.00+GP,  0220052070,  NONE, 1.2612, 0, 30, 15330