benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 u44x U44_1934_USC&GS, 2003-09-16,  MAJ ,  USGS ,  ASHTECH,  LP03203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.3864, 1.4339, 30, 15490
 u44x U44_1934_USC&GS, 2003-09-17,  MRF ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.1509, 1.2009, 30, 16630
 u44x U44_1934_USC&GS, 2003-09-18,  SHY ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2582, 1.3069, 30, 15160
 u44x U44_1934_USC&GS, 2007-09-16,  SBM ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L00,  ASH701945B_M,  CR519993706,  NONE, 1.2339, 1.2829, 30, 155230
 u44x U44_1934_USC&GS, 2007-09-18,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.1631, 1.2129, 30, 141830
 u44x U44_1934_USC&GS, 2011-09-18,  SW ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.2865, 1.3349, 15, 165445
 u44x U44_1934_USC&GS, 2011-09-24,  SAH ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.16, 1.2099, 15, 154745