benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 e220 E220_stmpd_3209S_USG, 1992-10-15,   ,   ,  TURBOROGUE,  132 ,   ,  AOAD/M_T,  132,  NONE, 1.157, 0, 30, 1970
 e220 E220_stmpd_3209S_USG, 1992-10-16,   ,   ,  TURBOROGUE,  132 ,   ,  AOAD/M_T,  132,  NONE, 1.1661, 0, 30, 15480
 e220, 1996-09-25,  KAS ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.1616, 1.2114, 30, 16220
 e220, 1996-09-26,  KAS ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.2026, 1.2519, 30, 15480
 e220 E220_stmpd_3209S_USG, 1998-09-23,  CHS ,  USGS ,  ASHTECH,  LP03362 ,  Z-XII3 CB00,  ASH700936E_C,  CR16379,  NONE, 1.3328, 1.3808, 30, 16230
 e220 E220_stmpd_3209S_USG, 1998-09-24,  CHS ,  USGS ,  ASHTECH,  LP03362 ,  Z-XII3 CB00,  ASH700936E_C,  CR16379,  NONE, 1.3368, 1.3848, 30, 15430
 e220, 2002-09-12,  WC ,  USGS MENLO PARK ,  TRIMBLE,  3337A03970 ,  4000SSE NP,  TRM22020.00+GP,  0220051878,  NONE, 1.4158, 0, 30, 172030
 e220 E220_stmpd_3209S_USG, 2002-09-13,  MCN ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992801,  NONE, 1.2895, 1.3379, 30, 15510