benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 haff Haff_HCR_1990_NGS, 1996-06-14,  unknown ,  CVO ,  Trimble 4000SSi,  14856,  NP,  TRM29659.00,  61140,  NONE, 1.3397, 0, 30, 13540
 haff Haff_HCR_1990_NGS, 1996-06-15,  unknown ,  CVO ,  Trimble 4000SSi,  14856,  NP,  TRM29659.00,  61140,  NONE, 1.3006, 0, 30, 133130
 haff Haff_HCR_1990_NGS, 2001-08-21,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945.02B,  CR619992801,  NONE, 1.3984, 1.4458, 30, 15290
 haff Haff_HCR_1990_NGS, 2001-08-22,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945.02B,  CR619992801,  NONE, 1.4186, 1.4658, 30, 1520