benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 bhrm Black_Hill_1881_USC&G, 1994-03-08,  UNKNOWN OBSERVER ,  MASS INST. OF TECHNO,  TRIMBLE 4000,  3053,  SSE,  TRM14532.00,  UNKNOWN,  NONE, 1.1225, 0, 30, 130
 bhrm Black_Hill_1881_USC&G, 1994-10-31,  D. POTTER ,  UCLA ,  TRIMBLE 4000,  1053,  SST,  TRM14532.00,  272,  NONE, 1.0187, 0, 30, 16350
 bhrm Black_Hill_1881_USC&G, 1994-11-01,  D. POTTER ,  UCLA ,  TRIMBLE 4000,  1053,  SST,  TRM14532.00,  272,  NONE, 0.9047, 0, 30, 16210
 bhrm Black_Hill_1881_USC&, 1993-11-18,  WKG ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.2342, 1.2832, 30, 16560
 bhrm Black_Hill_1881_USC&, 1996-05-07,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.1557, 1.2056, 30, 16260
 bhrm Black_Hill_1881_USC&, 1996-05-08,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.2252, 1.2743, 30, 15330
 bhrm Black_Hill_1881_USC&, 2001-05-15,  JMS ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 0.576, 0.6396, 30, 16830
 bhrm Black_Hill_1881_USC&, 2001-05-16,  JMS ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 0.5624, 0.6266, 30, 15530
 bhrm Black_Hill_1881_USC&, 2003-03-25,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.3168, 1.3649, 30, 16320
 bhrm Black_Hill_1881_USC&, 2003-03-26,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 0.5458, 0.6109, 30, 16500
 bhrm Black_Hill_1881_USC&, 2004-02-24,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE00,  ASH700936D_M,  CR14330,  NONE, 1.3056, 1.3539, 30, 163830
 bhrm Black_Hill_1881_USC&, 2005-05-04,  CHS ,  USGS ,  ASHTECH,  ZE1200411017 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.2379, 1.2868, 30, 152630
 bhrm Black_Hill_1881_USC&, 2005-05-05,  CHS ,  USGS ,  ASHTECH,  ZE1200411017 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.2137, 1.2629, 30, 152230
 bhrm Black_Hill_1881_USC&, 2006-05-24,  CHS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.157, 1.2069, 30, 152230
 bhrm Black_Hill_1881_USC&, 2006-06-06,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.2986, 1.3469, 30, 15480
 bhrm Black_Hill_1881_USC&, 2008-10-07,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L00,  ASH701945E_M,  CR520031622,  NONE, 1.244, 1.2929, 30, 153630
 bhrm Black_Hill_1881_USC&, 2008-10-08,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L00,  ASH701945E_M,  CR520031622,  NONE, 1.2531, 1.3019, 30, 15320
 bhrm Black_Hill_1881_USC&, 2011-10-23,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 0.8223, 0.8779, 15, 161945