benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 tuna Tuna_1933_City_of_LA, 1994-01-21,  WKG ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.2151, 1.2643, 30, 1600
 tuna Tuna_1933_City_of_LA, 1994-01-22,  KWC ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.3388, 1.3867, 30, 1610
 tuna Tuna_1933_City_of_LA, 1994-02-01,  GDH ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.2845, 1.333, 30, 163730
 tuna Tuna_1933_City_of_LA, 1994-02-16,  KWC ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.2624, 1.3111, 30, 580
 tuna Tuna_1933_City_of_LA, 1994-03-15,  KWC ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.2403, 1.2892, 30, 23530
 tuna Tuna_1933_City_of_LA, 1994-05-18,  JMS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.2966, 1.3449, 30, 460
 tuna Tuna_1933_City_of_LA, 1994-11-04,  CHS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E001,  ASH700228D,  1058,  NONE, 1.3156, 1.3638, 30, 14560
 tuna Tuna_1933_City_of_LA, 1995-12-04,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.383, 1.4305, 30, 163730
 tuna Tuna_1933_City_of_LA, 1996-12-09,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700228A,  0598,  NONE, 1.3448, 1.3927, 30, 16250
 tuna Tuna_1933_City_of_LA, 1996-12-10,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700228A,  0598,  NONE, 1.3448, 1.3927, 30, 30
 tuna Tuna_1933_City_of_LA, 1998-03-31,  JMS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.3015, 1.3498, 30, 162730
 tuna Tuna_1933_City_of_LA, 1998-04-01,  JMS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.3015, 1.3498, 30, 10
 tuna Tuna_1933_City_of_LA, 1999-05-19,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.4287, 1.4759, 30, 16230
 tuna Tuna_1933_City_of_LA, 1999-05-20,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.4287, 1.4759, 30, 30
 tuna Tuna_1933_City_of_LA, 1999-05-21,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.4287, 1.4759, 30, 30