benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 blab, 1995-09-17,  unknown ,  unknown ,  TRIMBLE 4000SE,  3467,  6.12,  TRM14532.00,  31,  NONE, 1.218, 0, 30, 17520
 BLAB, 1995-09-21,  unknown ,  unknown ,  TRIMBLE 4000SE,  3449,  6.12,  TRM14532.00,  684960,  NONE, 1.3408, 0, 30, 17220
 blab, 1996-07-12,  KAS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 0.4309, 0.5028, 30, 155930
 blab, 1996-07-13,  JMS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 0.4298, 0.5018, 30, 15510
 blab Black_Butte_1951_USC, 2000-08-22,  CHS ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945.02B,  CR619992805,  NONE, 1.2975, 1.3458, 30, 152330
 blab Black_Butte_1951_USC, 2000-08-23,  CHS ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945.02B,  CR619992805,  NONE, 1.2975, 1.3458, 30, 10
 blab Black_Butte_1951_USC, 2004-05-14,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE00,  ASH701945E_M,  CR520031615,  NONE, 1.2582, 1.3069, 30, 1690
 blab Black_Butte_1951_USC, 2004-05-15,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE00,  ASH701945E_M,  CR520031615,  NONE, 1.2582, 1.3069, 30, 0
 blab Black_Butte_1951_USC, 2004-05-16,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE00,  ASH701945E_M,  CR520031615,  NONE, 1.2582, 1.3069, 30, 0
 blab Black_Butte_1951_USC, 2004-05-17,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE00,  ASH701945E_M,  CR520031615,  NONE, 1.2582, 1.3069, 30, 0