benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 gray Grays_Harbor_E_B_2_19, 1993-08-18,  JWK ,  USGS-CVO ,  ASHTECH LM-XII3,  006,  7A,  ASH700228D,  006,  NONE, 1.4928, 1.5394, 15, 204315
 gray Grays_Harbor_E_B_2_19, 1993-08-19,  JWK ,  USGS-CVO ,  ASHTECH LM-XII3,  006,  7A26,  ASH700228D,  006,  NONE, 1.5028, 1.5494, 15, 203545
 gray Grays_Harbor_E_B_2_19, 1993-08-26,  JMS ,  USGS ,  ASHTECH LM-XII3,  274,  7A,  ASH700228A,  134,  NONE, 1.1799, 1.2295, 30, 20380
 gray Grays_Harbor_E_B_2_19, 1994-08-16,  DDZ ,  USGS/CVO ,  ASHTECH LM-XII3,  008,  7A,  ASH700228D,  008,  NONE, 1.1518, 1.2017, 15, 12115
 gray Grays_Harbor_E_B_2_19, 1994-08-17,  DDZ ,  USGS/CVO ,  ASHTECH LM-XII3,  008,  7A,  ASH700228D,  008,  NONE, 1.1518, 1.2017, 15, 12115
 gray Grays_Harbor_E_B_2_19, 1998-11-02,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 19590
 gray Grays_Harbor_E_B_2_19, 1998-11-03,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 15510
 gray Grays_Harbor_E_B_2_19, 1998-11-04,  GRD/NGS/NOAA ,  NGS/NOAA ,  TRIMBLE SSI,  3748A20591,  7.27,  TRM22020.00+GP,  0220108548,  NONE, 2, 0, 15, 154830
 gray Grays_Harbor_E_B_2_1, 1995-08-06,  MHM ,  USGS ,  ASHTECH,  283 ,  Z-XII3 1C01,  ASH700228A,  134,  NONE, 1.1537, 1.2037, 30, 151330
 gray Grays_Harbor_E_B_2_1, 1995-08-07,  MHM ,  USGS ,  ASHTECH,  283 ,  Z-XII3 1C01,  ASH700228A,  134,  NONE, 1.2161, 1.2653, 30, 155430
 gray Grays_Harbor_E_B_2_1, 1997-08-13,  CHS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14244,  NONE, 1.3005, 1.3488, 30, 15540
 gray Grays_Harbor_E_B_2_1, 1997-08-15,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1E95,  ASH700936D_M,  CR14341,  NONE, 1.4529, 1.4998, 30, 16630
 gray Grays_Harbor_E_B_2_1, 1999-08-22,  CHS ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.1923, 1.2418, 30, 153830
 gray Grays_Harbor_E_B_2_1, 1999-08-23,  JMS ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992805,  NONE, 1.3217, 1.3698, 30, 15510
 gray Grays_Harbor_E_B_2_1, 2001-03-04,  JLS ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993705,  NONE, 1.1953, 1.2447, 30, 30
 gray Grays_Harbor_E_B_2_1, 2001-03-05,  JLS ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993705,  NONE, 1.1953, 1.2447, 30, 10