benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hc04 HC04_unstamped_USGS, 2018-11-15,  JLS ,  USGS ,  JAVAD TRE_G3TH,  01661,  SIGMA3.5.14,  ASH700936D_M,  CR14244,  NONE, 0.1, 0.2325, 15, 192015
 hc04 HC04_unstamped_USGS, 2007-06-14,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2007-06-15,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2007-06-16,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2007-06-17,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2007-06-18,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2007-06-19,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.1, 0.2325, 30, 0
 hc04 HC04_unstamped_USGS, 2009-04-17,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2009-04-18,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2009-04-19,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-13,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 165230
 hc04 HC04_unstamped_USGS, 2011-05-14,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 17530
 hc04 HC04_unstamped_USGS, 2011-05-17,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-18,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-19,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-20,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-21,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-05-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2011-06-03,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2018-11-16,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2018-11-17,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2018-11-18,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.1, 0.2325, 15, 0
 hc04 HC04_unstamped_USGS, 2018-11-19,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.1, 0.2325, 15, 0