benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ferg Ferguson_1976_NCER, 1994-07-12,  JLS ,  USGS ,  ASHTECH,  104 ,  LM-XII3 7A,  ASH700228D,  1068,  NONE, 0.5651, 0.6292, 30, 2390
 ferg Ferguson_1976_NCER, 2002-05-05,  JLS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.5647, 0.6288, 30, 10
 ferg Ferguson_1976_NCER, 2002-05-06,  JLS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.5647, 0.6288, 30, 10
 ferg Ferguson_1976_NCER, 2006-07-23,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 0.5553, 0.6199, 30, 0
 ferg Ferguson_1976_NCER, 2006-07-24,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 0.5553, 0.6199, 30, 0
 ferg Ferguson_1976_NCER, 2006-07-25,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 0.5553, 0.6199, 30, 0