benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 01ef 01-EF_1993_CADT, 2008-06-15,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.8223, 0.8779, 30, 151730
 01ef 01-EF_1993_CADT, 2008-06-16,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.3369, 1.3849, 30, 1500