benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 russ Russ_USGS, 1993-08-20,  MHM ,  USGS ,  ASHTECH LM-XII3,  1827,  7A,  ASH700228D,  2104,  NONE, 1.1708, 1.2205, 5, 21555
 russ Russ_USGS, 1992-06-11,  MHM ,  USGS ,  ASHTECH,  2106 ,  LM-XII3 6GP4,  unknown,  1654,  Ashtech, 1.205, 0, 3, 359
 russ Russ_USGS, 1992-06-12,  MHM ,  USGS ,  ASHTECH,  2106 ,  LM-XII3 6GP4,  unknown,  1654,  Ashtech, 1.205, 0, 3, 0
 russ Russ_USGS, 1992-06-13,  MHM ,  USGS ,  ASHTECH,  2106 ,  LM-XII3 6GP4,  unknown,  1654,  Ashtech, 1.205, 0, 3, 0
 RUSS, 1993-08-18,  MHM ,   ,  ASHTECH,  1827 ,  LM-XII3 7A,  ASH700228D,  2104,  NONE, 1.1708, 1.2205, 5, 830
 RUSS, 1993-08-19,  MHM ,   ,  ASHTECH,  1827 ,  LM-XII3 7A,  ASH700228D,  2104,  NONE, 1.1708, 1.2205, 5, 221615