benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ai38, 1994-10-01,  J. DUTTON ,  UCLA ,  TRIMBLE 4000,  1053,  SST,  TRM14532.00,  1053,  NONE, 0.8384, 0, 30, 16210
 ai38, 1994-10-07,  D. POTTER ,  UCLA ,  TRIMBLE 4000,  1050,  SST,  TRM14532.00,  124,  NONE, 0.9109, 0, 30, 151930
 ai38, 1994-10-08,  D. POTTER ,  UCLA ,  TRIMBLE 4000,  1050,  SST,  TRM14532.00,  124,  NONE, 0.9109, 0, 30, 130
 ai38, 1997-07-21,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14631,  NP,  TRM29659.00,  73545,  NONE, 0.0814, 0, 30, 64130
 ai38, 1997-07-22,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14631,  NP,  TRM29659.00,  73545,  NONE, 0.0814, 0, 30, 30
 ai38, 1997-07-23,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14631,  NP,  TRM29659.00,  73545,  NONE, 0.0814, 0, 30, 30
 ai38, 1997-07-24,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14631,  NP,  TRM29659.00,  73545,  NONE, 0.0814, 0, 30, 30
 ai38, 1997-07-25,  unknown ,  UNIV CALIF DAVIS ,  TRIMBLE 4000SSI,  14631,  NP,  TRM29659.00,  73545,  NONE, 0.0814, 0, 30, 30
 ai38, 2010-03-03,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2531, 1.3019, 15, 172115
 ai38, 2010-03-04,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2531, 1.3019, 15, 0
 ai38, 2010-03-05,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2531, 1.3019, 15, 0
 ai38 AIR_1938_USCGS, 2011-03-17,  DND ,  USGS ,  ASHTECH,  LP03173 ,  Z-XII CC001,  TRM41249.00,  60177947,  NONE, 0.8639, 0.924, 15, 250
 ai38 AIR_1938_USCGS, 2011-03-18,  DND ,  USGS ,  ASHTECH,  LP03173 ,  Z-XII CC001,  TRM41249.00,  60177947,  NONE, 0.8639, 0.924, 15, 0
 ai38 AIR_1938_USCGS, 2011-03-19,  DND ,  USGS ,  ASHTECH,  LP03173 ,  Z-XII CC001,  TRM41249.00,  60177947,  NONE, 0.8639, 0.924, 15, 0