benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 j976, 1997-07-29,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14810,  NP,  TRM29659.00,  62091,  NONE, 1.1123, 0, 30, 51630
 j976, 1997-07-30,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14810,  NP,  TRM29659.00,  62091,  NONE, 1.1123, 0, 30, 30
 j976 J976_1964_USCGS, 2010-03-06,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.2177, 1.2669, 15, 162515
 j976 J976_1964_USCGS, 2010-03-07,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.2491, 1.2979, 15, 162845