benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 carl, 1999-09-15,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.1397, 1.1898, 30, 154730
 carl, 1999-09-19,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.1315, 1.1817, 30, 155130
 carl Carl_stmpd_OW-11+00., 2003-06-22,  MCN ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.3763, 1.4239, 30, 1610
 carl Carl_OW-11+00.14POT_, 2008-09-10,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 0.57, 0.6339, 30, 144545
 carl Carl_OW-11+00.14POT_, 2008-09-11,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.5992, 0.6618, 30, 151330