benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 esrd ESRD_unstmped, 2009-10-26,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.4489, 1.4959, 30, 161845
 esrd ESRD_unstmped, 2009-10-27,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 1.5094, 1.5559, 30, 164415
 esrd ESRD_unstmped, 2010-12-08,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.4721, 1.5189, 15, 164315
 esrd ESRD_unstmped, 2010-12-09,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.5567, 1.6029, 15, 164645
 esrd ESRD_unstmped, 2012-03-21,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.601, 1.6469, 15, 155215
 esrd ESRD_unstmped, 2012-03-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.6302, 1.6759, 15, 154215
 esrd ESRD_unstmped, 2017-08-16,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.6.9,  ASH701945E_M,  CR620022605,  NONE, 1.2278, 1.2769, 15, 134045
 esrd ESRD_unstmped, 2017-08-20,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  01599,  NONE, 1.3228, 1.3709, 15, 131415