benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pump, 1999-09-13,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.2125, 1.2617, 30, 153030
 pump, 1999-09-22,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.252, 1.3008, 30, 15430
 pump Pump_stmpd_BM84_No.T, 2003-06-19,  FFP ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.1165, 1.1669, 30, 183030
 pump, 2003-06-28,  WRT ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.3369, 1.3849, 30, 1610
 pump Pump_BM84_No.T-001-3, 2008-09-14,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4167, 1.464, 30, 15530
 pump Pump_BM84_No.T-001-3, 2008-09-16,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 1.2481, 1.2969, 30, 133815