benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 3926, 2003-09-11,  MRF ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.3501, 1.3979, 30, 16180
 3926, 2003-09-13,  SHY ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.1712, 1.2209, 30, 16030
 3926 392+6_9.58_IdDeptHwy, 2007-09-20,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 1.596, 1.6419, 30, 143930
 3926 392+6_9.58_IdDeptHwy, 2007-09-25,  MBA ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 1L00,  ASH701945E_M,  CR620022605,  NONE, 1.6966, 1.7419, 30, 15030