benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 htmn, 1999-08-25,  HYU ,  UNIV CALIF LOS ANGEL,  ASHTECH Z-XII3,  107,  1L00,  ASH700936A_M,  782,  NONE, 1.1577, 0, 20, 440
 htmn, 2010-03-05,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6596, 0.7199, 15, 3115
 htmn, 2010-03-06,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6596, 0.7199, 15, 0
 htmn, 2010-03-07,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6596, 0.7199, 15, 0
 htmn, 2010-03-08,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6596, 0.7199, 15, 0
 htmn Hartman_1992_CADT, 2015-04-10,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 0.7782, 0.8349, 15, 0
 htmn Hartman_1992_CADT, 2015-04-11,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 0.7782, 0.8349, 15, 0