benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 brot Brothers_1989_GPS_ORD, 1998-09-02,  MAXWELL L MCCREADY ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  4871,  Nav,  TRM22020.00+GP,  429,  NONE, 2, 0, 15, 181430
 brot Brothers_1989_GPS_ORD, 1998-09-03,  MAXWELL L MCCREADY ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  4871,  Nav,  TRM22020.00+GP,  0,  NONE, 2, 0, 15, 181030
 brot Brothers_1989_GPS_ORD, 1998-09-04,  MAXWELL L MCCREADY ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  4871,  Nav,  TRM22020.00+GP,  249,  NONE, 2, 0, 15, 141130
 brot Brothers_1989_GPS_ORD, 2016-08-03,  R. Till ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.6,  TRM41249.00,  Z-UK,  NONE, 0.5489, 0.6171, 15, 21815
 brot Brothers_1989_GPS_ORD, 2016-08-04,  R. Till ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.6,  TRM41249.00,  Z-UK,  NONE, 0.5489, 0.6171, 15, 0
 brot Brothers_1989_GPS_OR, 1992-09-02,  JMS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A24,  ASH700228D,  1058,  NONE, 1.3378, 1.3857, 30, 18250
 brot Brothers_1989_GPS_OR, 1999-02-19,  JMS ,  USGS ,  ASHTECH,  LP03362 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.357, 1.4048, 30, 16420
 brot Brothers_1989_GPS_OR, 1999-02-20,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.5365, 1.5828, 30, 164230
 brot Brothers_1989_GPS_OR, 2002-08-28,  MP ,  USGS ,  TRIMBLE,  16417 ,  4000SSI Nav,  TRM29659.00,  00062086,  NONE, 1.1604, 0, 30, 163930
 brot Brothers_1989_GPS_OR, 2002-08-29,  MP ,  USGS ,  TRIMBLE,  14804 ,  4000SSI Nav,  TRM29659.00,  00066195,  NONE, 1.3812, 0, 30, 155930
 brot Brothers_1989_GPS_OR, 2003-07-21,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945E_M,  CR620022605,  NONE, 1.1722, 1.2219, 30, 135930
 brot Brothers_1989_GPS_OR, 2003-07-27,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH700936D_M,  CR14341,  NONE, 1.1965, 1.2459, 30, 15420
 brot Brothers_1989_GPS_OR, 2009-08-28,  B. Pauk ,  USGS/Cascades Volcan,  TRIMBLE,  0220320138 ,  5700 NP,  TRM41249.00,  60194628,  NONE, 1.0572, 1.1145, 15, 14310