benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 stn3 unstamped_pin, 2006-11-04,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992801,  NONE, 0.6513, 0.7119, 30, 0
 stn3 unstamped_pin, 2006-11-05,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992801,  NONE, 0.6513, 0.7119, 30, 0
 stn3 unstamped_pin, 2006-11-06,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992801,  NONE, 0.6513, 0.7119, 30, 0
 stn3 unstamped_pin, 2014-01-23,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.7175, 0.7759, 15, 0
 stn3 unstamped_pin, 2014-01-24,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.7175, 0.7759, 15, 0
 stn3 unstamped_pin, 2014-01-25,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.7175, 0.7759, 15, 0