benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 prnc point_reyes_7251_ncm, 1992-02-12,  KWC ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6A,  ASH700228A,  0745,  NONE, 1.4302, 1.4773, 30, 203630
 prnc point_reyes_7251_ncm, 1992-02-13,  JMS ,  USGS ,  ASHTECH,  107 ,  LM-XII3 6A,  ASH700228D,  *031,  NONE, 1.4554, 1.5023, 30, 21470
 prnc point_reyes_7251_ncm, 1992-03-05,  CHS ,  USGS ,  ASHTECH,  99 ,  LM-XII3 6A,  ASH700228D,  1036,  NONE, 1.4383, 1.4854, 30, 212230
 prnc point_reyes_7251_ncm, 1992-03-11,  KWC ,  USGS ,  ASHTECH,  99 ,  LM-XII3 6A,  ASH700228D,  1036,  NONE, 1.383, 1.4305, 30, 2230
 prnc point_reyes_7251_ncm, 1992-03-12,  KWC ,  USGS ,  ASHTECH,  99 ,  LM-XII3 6A,  ASH700228D,  1036,  NONE, 1.383, 1.4305, 30, 270
 prnc point_reyes_7251_ncm, 1992-03-13,  CHS ,  USGS ,  ASHTECH,  764 ,  LM-XII3 6A,  ASH700228A,  0598,  NONE, 1.4544, 1.5013, 30, 19190
 prnc point_reyes_7251_ncm, 1993-01-12,  KWC ,  USGS ,  ASHTECH,  0831 ,  LM-XII3 6M24,  ASH700228A,  1027,  NONE, 1.3066, 1.3548, 30, 6170
 prnc point_reyes_7251_ncm, 1993-02-09,  KWC ,  USGS ,  ASHTECH,  107 ,  LM-XII3 6M24,  ASH700228D,  *031,  NONE, 1.3589, 1.4066, 30, 870
 prnc point_reyes_7251_ncm, 1993-02-10,  KWC ,  USGS ,  ASHTECH,  107 ,  LM-XII3 6M24,  ASH700228D,  *031,  NONE, 1.3287, 1.3767, 30, 92730
 prnc point_reyes_7251_ncm, 1993-02-11,  BRJ ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6M24,  ASH700228A,  0745,  NONE, 1.1537, 1.2037, 30, 9510
 prnc point_reyes_7251_ncm, 1993-02-12,  MAH ,  USGS ,  ASHTECH,  762 ,  LM-XII3 6M24,  ASH700228A,  0745,  NONE, 1.5196, 1.566, 30, 95730
 prnc point_reyes_7251_ncm, 1993-03-16,  CHS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 6M24,  ASH700228D,  1058,  NONE, 1.3538, 1.4016, 30, 30
 prnc point_reyes_7251_ncm, 1994-03-03,  KWC ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.3599, 1.4076, 30, 14260
 prnc point_reyes_7251_ncm, 1994-03-04,  KWC ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.376, 1.4236, 30, 134530
 prnc point_reyes_7251_ncm, 1994-04-20,  KWC ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.382, 1.4295, 30, 13270
 prnc point_reyes_7251_ncm, 1995-09-19,  CHS ,  USGS ,  ASHTECH,  LP00108 ,  LM-XII3 7A,  ASH700228A,  1026,  NONE, 1.4262, 1.4734, 30, 155530
 prnc point_reyes_7251_ncm, 1995-11-02,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.378, 1.4256, 30, 16180
 prnc point_reyes_7251_ncm, 1995-11-03,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.4142, 1.4615, 30, 16150
 prnc point_reyes_7251_ncm, 1996-10-28,  CHS ,  USGS ,  ASHTECH,  270 ,  Z-XII3 1E86,  ASH700228A,  1027,  NONE, 1.5126, 1.5591, 30, 16130
 prnc point_reyes_7251_ncm, 1996-11-13,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1E95,  ASH700718B,  11401,  NONE, 1.5353, 1.5816, 30, 16410