benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 es01 ES01_unstamped, 2007-10-02,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6937, 0.7529, 30, 0
 es01 ES01_unstamped, 2007-10-03,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6937, 0.7529, 30, 0
 es01 ES01_unstamped, 2007-10-04,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6937, 0.7529, 30, 0
 es01 ES01_unstamped, 2009-04-22,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 1.3864, 1.4339, 30, 15460
 es01 ES01_unstamped, 2009-04-23,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 1.3632, 1.4109, 30, 151930
 es01 ES01_unstamped, 2011-06-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.5638, 1.6099, 15, 0
 es01 ES01_unstamped, 2011-06-23,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.5638, 1.6099, 15, 0
 es01 ES01_unstamped, 2014-09-09,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 17300
 es01 ES01_unstamped, 2014-09-10,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-11,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-12,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-13,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-14,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-15,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-09-16,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.7977, 0.8539, 15, 0
 es01 ES01_unstamped, 2014-11-04,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 1850
 es01 ES01_unstamped, 2014-11-05,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0
 es01 ES01_unstamped, 2014-11-06,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0
 es01 ES01_unstamped, 2014-11-07,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0
 es01 ES01_unstamped, 2014-11-08,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0
 es01 ES01_unstamped, 2014-11-09,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0
 es01 ES01_unstamped, 2014-11-10,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.9845, 1.0369, 15, 0