benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 amos, 1999-09-10,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.4307, 1.4778, 30, 145230
 amos, 1999-09-24,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.166, 1.2158, 30, 153230
 amos Amos_Stmpd_G425_1984, 2003-06-21,  SAH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.4096, 1.4569, 30, 161530
 amos Amos_Stmpd_G425_1984, 2003-06-28,  CWW ,  USGS ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.5789, 1.6249, 30, 15570