benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 kegg KEG, 1994-06-27,  TJW ,   ,  ASHTECH LM-XII3,  212,  6M,  ASH700228D,  597,  NONE, 1.29, 1.3384, 30, 171030
 kegg KEG, 1994-06-29,  TJW ,   ,  ASHTECH LM-XII3,  212,  6M,  ASH700228D,  597,  NONE, 1.318, 1.3661, 30, 17930
 kegg, 1999-05-26,   ,   ,  TRIMBLE 4000SSE,  4869,  7.25,  4000ST,  76725,  L1/L2, 2, 0, 30, 14530
 kegg, 1999-05-27,   ,   ,  TRIMBLE 4000SSE,  4869,  7.25,  4000ST,  76725,  L1/L2, 2, 0, 30, 18630
 kegg, 1999-05-28,   ,   ,  TRIMBLE 4000SSE,  4869,  7.25,  4000ST,  76725,  L1/L2, 2, 0, 30, 135730
 kegg KEG_1957_USC&GS, 2008-02-26,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.2582, 1.3069, 30, 0
 kegg KEG_1957_USC&GS, 2008-02-27,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.1803, 1.2299, 30, 0
 kegg KEG_1957_USC&GS, 2008-02-28,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.1803, 1.2299, 30, 0
 kegg KEG_1957_USC&GS, 2008-02-29,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.1803, 1.2299, 30, 0
 kegg KEG_1957_USC&GS, 2008-09-05,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.593, 0.6558, 30, 0
 kegg KEG_1957_USC&GS, 2008-09-06,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.593, 0.6558, 30, 0
 kegg KEG_1957_USC&GS, 2008-09-07,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.593, 0.6558, 30, 0