benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 go57 GOO57_USGS, 2007-01-28,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.2945, 1.3429, 30, 17330
 go57 GCO57_USGS, 2007-01-29,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 1.2258, 1.2749, 30, 16450
 go57 GOO57_USGS, 2007-03-21,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.2976, 1.3459, 30, 16130
 go57 GOO57_USGS, 2009-04-28,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.239, 1.2879, 30, 15190
 go57 GOO57_USGS, 2009-04-29,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.2349, 1.2839, 30, 15160
 go57 GOO57_USGS, 2013-06-26,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 1.3844, 1.4319, 15, 153615
 go57 GOO57_USGS, 2013-06-27,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 1.3713, 1.4189, 15, 153215
 go57 GOO57_USGS, 2019-03-15,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 1.2814, 1.3299, 15, 165145
 go57 GOO57_USGS, 2019-03-16,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 1.2814, 1.3299, 15, 0