benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 halm Halmaur_1990_NCER, 1992-03-03,  JMS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6A,  ASH700228A,  0745,  NONE, 1.2805, 1.329, 30, 32430
 halm Halmaur_1990_NCER, 1992-03-04,  JMS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6A,  ASH700228A,  0745,  NONE, 1.3087, 1.3569, 30, 1370
 halm Halmaur_1990_NCER, 1994-05-02,  JMS ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.4282, 1.4753, 30, 133630
 halm Halmaur_1990_NCER, 1995-07-06,  JMS ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.4674, 1.5142, 30, 15730
 halm Halmaur_1990_NCER, 1996-06-19,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.4453, 1.4923, 30, 15530
 halm Halmaur_1990_NCER, 1996-06-27,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.4935, 1.5401, 30, 15130
 halm Halmaur_1990_NCER, 1997-07-29,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1E95,  ASH700936D_M,  CR14341,  NONE, 1.4922, 1.5388, 30, 151230
 halm Halmaur_1990_NCER, 1997-10-06,  JMS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14341,  NONE, 1.352, 1.3998, 30, 15240
 halm Halmaur_1990_NCER, 1999-03-31,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14329,  NONE, 1.4478, 1.4948, 30, 164030
 halm Halmaur_1990_NCER, 2001-02-15,  JMS ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.4004, 1.4478, 30, 16560
 halm Halmaur_1990_NCER, 2001-02-27,  JMS ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.4629, 1.5098, 30, 16440
 halm Halmaur_1990_NCER, 2005-03-08,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.4792, 1.526, 30, 0
 halm Halmaur_1990_NCER, 2005-03-09,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.4792, 1.526, 30, 0
 halm Halmaur_1990_NCER, 2005-03-10,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.4792, 1.526, 30, 0
 halm Halmaur_1990_NCER, 2011-01-26,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.594, 1.6399, 15, 18150
 halm Halmaur_1990_NCER, 2011-01-27,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.594, 1.6399, 15, 0
 halm Halmaur_1990_NCER, 2011-01-28,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.594, 1.6399, 15, 0
 halm Halmaur_1990_NCER, 2017-08-31,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 181930
 halm Halmaur_1990_NCER, 2017-09-01,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 0
 halm Halmaur_1990_NCER, 2017-09-02,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 0
 halm Halmaur_1990_NCER, 2017-09-03,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 0
 halm Halmaur_1990_NCER, 2017-09-04,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 0
 halm Halmaur_1990_NCER, 2017-09-05,  ELP ,  USGS ,  JAVAD,  01657 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR620022605,  NONE, 0.8581, 0.9129, 15, 0