benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 qu90, 1994-08-11,  unknown ,  CVO ,  TRIMBLE 4000SSE,  03586,  GammaNP,  TRM14532.00,  00000,  NONE, 1.3285, 0, 30, 124615
 qu90, 1994-08-12,  unknown ,  CVO ,  TRIMBLE 4000SSE,  03586,  GammaNP5.66SP,  TRM14532.00,  00000,  NONE, 1.3903, 0, 30, 124945
 qu90 Quin, 2002-08-22,  JLS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14333,  NONE, 1.1772, 1.2269, 30, 15120
 qu90 Quin, 2002-08-23,  JLS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14244,  NONE, 1.1955, 1.2449, 30, 13120
 qu90 Quin_1990_NGS, 2004-08-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE00,  ASH701945E_M,  CR620022602,  NONE, 1.3763, 1.4239, 30, 163030
 qu90 Quin_1990_NGS, 2004-08-24,  GDH ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE00,  ASH700936D_M,  CR14329,  NONE, 1.244, 1.2929, 30, 1540