benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 cerr Cerro_Gordo_1934_USC, 1994-11-20,  WKG ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.3026, 1.3509, 30, 145530
 cerr Cerro_Gordo_1934_USC, 1996-02-09,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1F00,  ASH700228D,  1068,  NONE, 1.2694, 1.318, 30, 165930
 cerr Cerro_Gordo_1934_USC, 1996-02-19,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 0.4662, 0.5358, 30, 165330
 cerr Cerro_Gordo_1934_USC, 1997-10-26,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.3671, 1.4148, 30, 165230
 cerr Cerro_Gordo_1934_USC, 1997-10-27,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936D_M,  CR14333,  NONE, 1.3641, 1.4118, 30, 16540
 cerr Cerro_Gordo_1934_USC, 1999-04-15,  JLS ,  USGS ,  ASHTECH,  LP03450 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.17, 1.2197, 30, 18130
 cerr Cerro_Gordo_1934_USC, 1999-04-16,  JLS ,  USGS ,  ASHTECH,  LP03450 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.17, 1.2197, 30, 10
 cerr Cerro_Gordo_1934_USC, 2002-07-11,  JLS ,  USGS ,  ASHTECH,  LP03192 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.462, 0.5318, 30, 17330
 cerr Cerro_Gordo_1934_USC, 2002-07-12,  JLS ,  USGS ,  ASHTECH,  LP03192 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.462, 0.5318, 30, 30
 cerr Cerro_Gordo_1934_USC, 2002-07-13,  JLS ,  USGS ,  ASHTECH,  LP03192 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.462, 0.5318, 30, 30
 cerr Cerro_Gordo_1934_USC, 2002-07-14,  JLS ,  USGS ,  ASHTECH,  LP03192 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 0.462, 0.5318, 30, 30
 cerr Cerro_Gordo_1934_USC, 2003-06-07,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022602,  NONE, 0.5479, 0.6128, 30, 0
 cerr Cerro_Gordo_1934_USC, 2003-06-08,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022602,  NONE, 0.5479, 0.6128, 30, 0
 cerr Cerro_Gordo_1934_USC, 2003-06-09,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022602,  NONE, 0.5479, 0.6128, 30, 0
 cerr Cerro_Gordo_1934_USC, 2003-06-10,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022602,  NONE, 0.5479, 0.6128, 30, 0
 cerr Cerro_Gordo_1934_USC, 2003-06-11,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022602,  NONE, 0.5479, 0.6128, 30, 0