benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 exce Excelsior_1935_USC&GS, 1994-07-15,  CHS ,  USGS ,  ASHTECH LM-XII3,  762,  7A,  ASH700228A,  0745,  NONE, 1.4634, 1.5103, 30, 0
 exce Excelsior_1935_USC&G, 2002-05-03,  GDH ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 0.6055, 0.6679, 30, 10
 exce Excelsior_1935_USC&G, 2002-05-04,  GDH ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 0.6055, 0.6679, 30, 10
 exce Excelsior_1935_USC&G, 2005-05-18,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.5731, 0.6368, 30, 0
 exce Excelsior_1935_USC&G, 2005-05-19,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.5731, 0.6368, 30, 0
 exce Excelsior_1935_USC&G, 2005-05-20,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.5731, 0.6368, 30, 0