benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 z25x, 2000-09-15,  JMS ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993705,  NONE, 1.2621, 1.3108, 30, 16570
 z25x, 2000-09-17,  JMS ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993705,  NONE, 1.254, 1.3028, 30, 16130
 z25x, 2002-05-01,  JLS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.1843, 1.2338, 30, 15300
 z25x Z25X_1953_USC&GS, 2002-10-23,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.2036, 1.2529, 30, 153930
 z25x Z25X_1953_USC&GS, 2004-09-19,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.243, 1.2919, 30, 164530
 z25x Z25X_1953_USC&GS, 2004-09-20,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.2015, 1.2509, 30, 15440
 z25x Z25X_1933_USC&GS, 2005-05-18,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.1853, 1.2349, 30, 15570
 z25x Z25X_1933_USC&GS, 2005-05-22,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.1985, 1.2479, 30, 15930
 z25x Z25X_1933_USC&GS, 2009-09-22,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.6097, 0.6719, 30, 15245
 z25x Z25_1933_USC&GS, 2009-11-01,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 16945