benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 twnv TWNV_USGS, 2017-08-15,  ELP ,  USGS ,  JAVAD TRE_G3TH,  00624,  SIGMA3.6.9,  JAVRINGANT_DM,  01599,  NONE, 0.7504, 0.8078, 15, 204045
 twnv TWNV_USGS, 2009-08-23,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.5342, 0.5998, 30, 0
 twnv TWNV_USGS, 2009-08-24,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.5342, 0.5998, 30, 0
 twnv TWNV_USGS, 2010-07-08,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.645, 0.7059, 15, 0
 twnv TWNV_USGS, 2010-07-09,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.645, 0.7059, 15, 0
 twnv TWNV_USGS, 2010-07-10,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.645, 0.7059, 15, 0
 twnv TWNV_USGS, 2012-07-11,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 0.6492, 0.7099, 15, 0
 twnv TWNV_USGS, 2012-07-12,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 0.6492, 0.7099, 15, 0
 twnv TWNV_USGS, 2013-06-05,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8223, 0.8779, 15, 171245
 twnv TWNV_USGS, 2013-06-06,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8223, 0.8779, 15, 0
 twnv TWNV_USGS, 2013-06-07,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8223, 0.8779, 15, 0
 twnv TWNV_USGS, 2013-06-08,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8223, 0.8779, 15, 0
 twnv TWNV_USGS, 2015-06-23,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 0.7267, 0.7848, 15, 173815
 twnv TWNV_USGS, 2015-06-24,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 0.7267, 0.7848, 15, 0
 twnv TWNV_USGS, 2015-06-25,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 0.7267, 0.7848, 15, 0
 twnv TWNV_USGS, 2016-08-15,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  JAVRINGANT_DM,  00488,  NONE, 0.7442, 0.8018, 15, 17845
 twnv TWNV_USGS, 2016-08-16,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  JAVRINGANT_DM,  00488,  NONE, 0.7442, 0.8018, 15, 0
 twnv TWNV_USGS, 2016-08-17,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  JAVRINGANT_DM,  00488,  NONE, 0.7442, 0.8018, 15, 0
 twnv TWNV_USGS, 2016-08-18,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  JAVRINGANT_DM,  00488,  NONE, 0.7442, 0.8018, 15, 0
 twnv TWNV_USGS, 2017-08-16,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  01599,  NONE, 0.7504, 0.8078, 15, 0
 twnv TWNV_USGS, 2017-08-17,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  01599,  NONE, 0.7504, 0.8078, 15, 0
 twnv TWNV_USGS, 2017-08-18,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  01599,  NONE, 0.7504, 0.8078, 15, 0
 twnv TWNV_USGS, 2022-07-14,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00580,  NONE, 0.6803, 0.7399, 15, 185245
 twnv TWNV_USGS, 2022-07-15,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00580,  NONE, 0.6803, 0.7399, 15, 0
 twnv TWNV_USGS, 2022-07-16,  ELP ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00580,  NONE, 0.6803, 0.7399, 15, 0