benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 3756 3756_1908_bm_USGS, 1994-07-08,  KMH ,  USGS ,  ASHTECH LM-XII3,  104,  7A,  ASH700228D,  1068,  NONE, 1.2282, 1.2773, 30, 14480
 3756 3756_1908_bm_USGS, 2000-08-20,  CHS ,   ,  ASHTECH Z-XII3,  4600,  CD00,  ASH701945.02B,  CR619992805,  NONE, 1.167, 1.2168, 30, 152930
 3756 3756_1908_bm_USGS, 2000-08-21,  GDH ,   ,  ASHTECH Z-XII3,  lp019992803,  CD00,  ASH701945B_M,  CR519993702,  NONE, 1.1599, 1.2097, 30, 1570
 3756 3756_1908_bm_USGS, 2004-05-11,  JLS ,  USGS ,  ASHTECH Z-XII3,  LP03360,  CC00,  ASH701945E_M,  CR620022601,  NONE, 1.1702, 1.22, 30, 154930
 3756 3756_1908_bm_USGS, 2004-05-14,  JMS ,  USGS ,  ASHTECH Z-XII3,  LP019992804,  CD00,  ASH701945E_M,  CR620022605,  NONE, 0.2757, 0.3638, 30, 15550