benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 h348, 2003-09-09,  WCH ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.1965, 1.2459, 30, 174830
 h348, 2003-09-17,  CWW ,  USGS ,  ASHTECH,  LP03188 ,  Z-XII3 CD00,  ASH700936E_C,  CR16381,  NONE, 1.3319, 1.3799, 30, 165545
 h348 H348_1953_USC&GS, 2007-09-06,  GDH ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.246, 1.2949, 30, 16240
 h348 H348_1953_USC&GS, 2007-09-12,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 1.3319, 1.3799, 30, 15730
 h348 H348_1953_USC&GS, 2008-02-26,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.1479, 1.1979, 30, 0
 h348 H348_1953_USC&GS, 2008-02-27,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.1479, 1.1979, 30, 0
 h348 H348_1953_USC&GS, 2008-02-28,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.1479, 1.1979, 30, 0
 h348 H348_1953_USC&GS, 2011-09-12,  JLS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.6792, 0.7388, 15, 141145
 h348 H348_1953_USC&GS, 2011-09-13,  JLS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.6792, 0.7388, 15, 0