benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 tnls TNLS_USGS, 2007-03-23,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4156, 1.4629, 30, 18100
 tnls TNLS_USGS, 2007-03-24,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4156, 1.4629, 30, 0
 tnls TNLS_USGS, 2007-03-25,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4156, 1.4629, 30, 0
 tnls TNLS_USGS, 2007-03-26,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4156, 1.4629, 30, 0
 tnls TNLS_USGS, 2009-05-01,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8294, 0.8848, 30, 0
 tnls TNLS_USGS, 2009-05-02,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8294, 0.8848, 30, 0
 tnls TNLS_USGS, 2009-05-03,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8294, 0.8848, 30, 0
 tnls TNLS_USGS, 2009-05-04,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8294, 0.8848, 30, 0
 tnls TNLS_USGS, 2013-10-25,  JLS ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.8581, 0.9129, 15, 162145
 tnls TNLS_USGS, 2013-10-26,  JLS ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.8581, 0.9129, 15, 0
 tnls TNLS_USGS, 2013-10-27,  JLS ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.8581, 0.9129, 15, 0
 tnls TNLS_USGS, 2013-10-28,  JLS ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.8581, 0.9129, 15, 0
 tnls TNLS_USGS, 2013-10-29,  JLS ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 0.8581, 0.9129, 15, 0
 tnls TNLS_USGS, 2019-04-02,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 0.8397, 0.8949, 15, 171345
 tnls TNLS_USGS, 2019-04-03,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 0.8397, 0.8949, 15, 0
 tnls TNLS_USGS, 2019-04-04,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 0.8397, 0.8949, 15, 0
 tnls TNLS_USGS, 2019-04-05,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 0.8397, 0.8949, 15, 0
 tnls TNLS_USGS, 2019-04-06,  JLS ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14329,  NONE, 0.8397, 0.8949, 15, 0