benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 175l 175_LAK_00.34_CalTra, 2005-12-05,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.3904, 1.4379, 30, 163730
 175l 175_LAK_00.34_CalTra, 2005-12-06,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.4499, 1.4969, 30, 16350
 175l 175_LAK_00.34_CalTra, 2006-08-16,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945E_M,  CR620022601,  NONE, 1.4711, 1.5179, 30, 15120
 175l 175_LAK_00.34_CalTra, 2006-08-23,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.4973, 1.5439, 30, 15240
 175l 175_LAK_00.34_CalTra, 2008-07-10,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII 1L00,  ASH701945E_M,  CR620022602,  NONE, 1.458, 1.5049, 30, 1540
 175l 175_LAK_00.34_CalTra, 2008-07-11,  JLS ,  USGS ,  ASHTECH,  579 ,  Z-XII 1L00,  ASH700936D_M,  CR14330,  NONE, 1.16, 1.2099, 30, 15530
 175l 175_LAK_00.34_CalTra, 2008-07-16,  JLS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1742, 1.2239, 30, 1500
 175l 175_LAK_00.34_CalTra, 2009-08-18,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.4278, 1.4749, 30, 153430
 175l 175_LAK_00.34_CalTra, 2009-08-23,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.5064, 1.5529, 30, 16230
 175l 175_LAK_00.34_CalTra, 2010-06-21,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.4782, 1.5249, 15, 15245
 175l 175_LAK_00.34_CalTra, 2010-06-29,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.4207, 1.4679, 15, 15415
 175l 175_LAK_00.34_CalTra, 2018-01-27,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 161145
 175l 175_LAK_00.34_CalTra, 2018-02-27,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.5.1,  ASH701945B_M,  CR619992805,  NONE, 1.2036, 1.2529, 15, 154445