benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 rc50 RCE_6250, 2007-06-27,  JMS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.7017, 1.7469, 30, 16330
 rc50 RCE_6250, 2007-06-28,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 1.5668, 1.6129, 30, 15330
 rc50 RCE_6250, 2009-01-22,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.5557, 1.6019, 30, 16230
 rc50 RCE_6250, 2009-01-28,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.5708, 1.6169, 30, 16140
 rc50 RCE_6250, 2011-06-06,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.602, 1.6479, 15, 145745
 rc50 RCE_6250, 2011-06-07,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.5789, 1.6249, 15, 145445
 rc50 RCE_6250, 2014-08-28,  JLS ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031622,  NONE, 1.5859, 1.6319, 15, 135345
 rc50 RCE_6250, 2014-09-10,  JLS ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  JAVRINGANT_DM,  00574,  NONE, 1.5567, 1.6029, 15, 14215
 rc50 RCE_6250, 2014-11-04,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993706,  NONE, 1.4802, 1.5269, 15, 151345
 rc50 RCE_6250, 2014-11-05,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.7288, 1.7739, 15, 17915