benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 wht1, 2004-07-14,  ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320133,  NP,  TRM41249.00,  12470856,  NONE, 0.7891, 0.8506, 30, 30
 wht1, 2004-07-15,  ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  12560646,  NONE, 0.8919, 0.9515, 30, 144230
 wht1, 2004-07-16,  ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  12560646,  NONE, 0.8919, 0.9515, 30, 30
 wht1, 2018-07-27,  R. Kramer ,  USGS/CalVO ,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.7,  TRM41249.00,  60121200,  NONE, 1.0681, 1.1253, 15, 211815
 wht1, 2006-07-28,  MLSD ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  0220066593,  NONE, 1.1158, 0, 30, 30
 wht1, 2006-07-29,  MLSD ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  0220066593,  NONE, 1.1158, 0, 30, 30
 wht1, 2012-07-20,  M.Davidson ,  USGS/Cascades Volcan,  TRIMBLE,  0220264600 ,  5700 1.20,  TRM41249.00,  N/A,  NONE, 0.8752, 0.9351, 15, 200
 wht1, 2012-07-21,  M.Davidson ,  USGS/Cascades Volcan,  TRIMBLE,  0220264600 ,  5700 1.20,  TRM41249.00,  N/A,  NONE, 0.8752, 0.9351, 15, 30
 wht1, 2018-07-28,  R. Kramer ,  USGS/CalVO ,  JAVAD,  00600 ,  TRE_G3TH SIGMA3.6.7,  TRM41249.00,  60121200,  NONE, 1.0681, 1.1253, 15, 0
 wht1, 2018-07-29,  R. Kramer ,  USGS/CalVO ,  JAVAD,  00600 ,  TRE_G3TH SIGMA3.6.7,  TRM41249.00,  60121200,  NONE, 1.0681, 1.1253, 15, 0