benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hopp Hopper_1932_USC&GS, 1992-04-14,  GDH ,  USGS ,  ASHTECH,  107 ,  LM-XII3 6A,  ASH700228D,  *031,  NONE, 1.4955, 1.5421, 30, 24930
 hopp Hopper_1932_USC&GS, 1993-05-09,  WKG ,  USGS ,  ASHTECH,  099 ,  LM-XII3 6M24,  ASH700228D,  1036,  NONE, 1.5738, 1.6199, 30, 3030
 hopp Hopper_1932_USC&GS, 1993-11-18,  KWC ,  USGS ,  ASHTECH,  104 ,  LM-XII3 7A,  ASH700228D,  1068,  NONE, 1.4031, 1.4505, 30, 530
 hopp Hopper_1932_USC&GS, 1997-03-19,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700228D,  1068,  NONE, 1.5447, 1.591, 30, 181030
 hopp Hopper_1932_USC&GS, 1997-03-20,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700228D,  1068,  NONE, 1.5437, 1.59, 30, 30