benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 CHIL, 1995-09-20,  unknown ,  unknown ,  TRIMBLE 4000SE,  3462,  6.12,  TRM14532.00,  28,  NONE, 1.1458, 0, 30, 164030
 chll, 1996-07-12,  JLS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1F00,  ASH700228D,  1068,  NONE, 1.1879, 1.2374, 30, 153930
 chll, 1996-07-13,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.2956, 1.3439, 30, 15430
 chll Chill_1951_USC&GS, 2000-08-22,  GDH ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 1.2237, 1.2728, 30, 15530
 chll Chill_1951_USC&GS, 2000-08-23,  GDH ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 1.2237, 1.2728, 30, 10
 chll Chill_1951_USC&GS, 2004-05-18,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE00,  ASH701945B_M,  CR519993706,  NONE, 1.1783, 1.2279, 30, 234430
 chll Chill_1951_USC&GS, 2004-05-19,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE00,  ASH701945B_M,  CR519993706,  NONE, 1.1783, 1.2279, 30, 0
 chll Chill_1951_USC&GS, 2004-05-20,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE00,  ASH701945B_M,  CR519993706,  NONE, 1.1783, 1.2279, 30, 0