benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 stew, 1994-06-15,  Siegal Lori / Owen,  Stanford University ,  TRIMBLE 4000SSE,  3327A03454,  NP,  TRM14532.00,  3012A00103,  NONE, 1.2373, 0, 30, 17420
 stew, 1994-06-16,  Siegel Lori ,  Stanford University ,  TRIMBLE 4000SSE,  3327A03454,  NP,  TRM14532.00,  3012A00103,  NONE, 1.3571, 0, 30, 162230
 stew, 1994-06-17,  Seigel Lori ,  Stanford University ,  TRIMBLE 4000SSE,  3327A03454,  NP,  TRM14532.00,  3012A00103,  NONE, 1.283, 0, 30, 153230
 stew 04-13_1990_CADT, 1998-07-22,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000,  4888,  SSE,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 143115
 stew 04-13_1990_CADT, 1998-07-23,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000,  4888,  SSE,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 191715
 stew 04-13_1990_CADT, 1998-07-24,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000,  4888,  SSE,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 142315
 stew 04-13_1990_CADT, 1998-07-27,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000,  4888,  SSE,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 194015
 stew, 2007-04-09,  D. Phillips J. Skla,  UNKNOWN ,  TPS GB-1000,  T224618,  3.0,  TRM29659.00,  0220369887,  NONE, 1.6432, 0, 15, 0
 stew 04-13_1990_CADT, 2013-03-14,  JLS ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022605,  NONE, 1.5648, 1.6109, 15, 164515
 stew, 2013-03-17,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.5487, 1.5949, 15, 16200
 stew 04-13_1990_CADT, 2018-05-22,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00585,  NONE, 0.7884, 0.8448, 15, 144115
 stew 04-13_1990_CADT, 2018-05-23,  ELP ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00585,  NONE, 0.7802, 0.8368, 15, 142845