benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 HATC, 1998-11-02,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 20115
 hatk, 1998-11-03,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 155215
 hatk, 1998-11-04,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 154815
 hatk Hatchery_1990_NGS, 2004-08-23,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14244,  NONE, 1.2197, 1.2688, 30, 0
 hatk Hatchery_1990_NGS, 2004-08-24,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14244,  NONE, 1.2197, 1.2688, 30, 0