benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 fish Fish_1989_NGS, 1993-08-21,  MHM ,  USGS ,  ASHTECH LM-XII3,  763,  7A,  ASH700228A,  0718,  NONE, 1.378, 1.4256, 30, 214130
 fish Fish_1989_NGS, 1998-08-14,  KRIS A GREEN ,  CURRY COUNTY SURVEYO,  TRIMBLE 7400MSI,  3637A16862,  Nav,  TRM22020.00+GP,  0220069956,  NONE, 1.5578, 0, 15, 151630
 fish Fish_1989_NGS, 1998-08-18,  RIS A GREEN ,  CURRY COUNTY SURVEYO,  TRIMBLE 7400MSI,  3637A16862,  Nav,  TRM22020.00+GP,  0220069956,  NONE, 1.5288, 0, 15, 191530
 fish Fish_1989_NGS_Oregot, 2001-07-20,  CHS ,   ,  ASHTECH,  801 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992801,  NONE, 1.4448, 1.4918, 30, 151030
 fish Fish_1989_GPS_Oregot, 2005-06-27,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.2491, 1.2979, 30, 15270
 fish Fish_1989_GPS_Oregot, 2005-06-28,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.3592, 1.4069, 30, 151730