benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 m901 Mono_901_USGS_stamped, 1993-07-11,  CHS ,  USGS ,  ASHTECH LM-XII3,  764,  7A26,  ASH700228A,  0598,  NONE, 1.2734, 1.322, 30, 23200
 m901 Mono_901_USGS_stampe, 1992-08-15,  BDK ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.1673, 1.2171, 30, 1820
 m901 Mono_901_USGS_stampe, 1994-07-27,  CHS ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.2765, 1.3251, 30, 14180