benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 6854 6854_USGS, 1993-07-12,  BDK ,  USGS ,  ASHTECH LM-XII3,  763,  7A26,  ASH700228A,  0718,  NONE, 1.1078, 1.1583, 30, 233130
 6854 6854_USGS, 1992-08-15,  WKG ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.1567, 1.2066, 30, 18570
 6854 6854_USGS, 1994-07-27,  WKG ,  USGS ,  ASHTECH,  623 ,  L-XII 7A,  ASH700228A,  683,  NONE, 1.1487, 1.1987, 30, 144430