benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 refu, 1995-08-15,  Agnew/Johnson ,  SCRIPPS INSTITUTION ,  TRIMBLE 4000,  491,  SST,  TRM14532.00,  27,  NONE, 0.7743, 0, 30, 30
 refu, 1995-08-16,  Agnew/Johnson ,  SCRIPPS INSTITUTION ,  TRIMBLE 4000,  491,  SST,  TRM14532.00,  27,  NONE, 0.7743, 0, 30, 30
 refu, 2003-03-19,  KEA ,  UNIV SOUTHERN CALIFO,  ASHTECH Z-XII3,  175,  CD00,  AOAD/M_T,  381,  NONE, 0.6452, 0, 30, 1230
 refu, 2003-03-20,  KEA ,  UNIV SOUTHERN CALIFO,  ASHTECH Z-XII3,  175,  CD00,  AOAD/M_T,  381,  NONE, 0.6452, 0, 30, 30
 refu, 2003-03-21,  KEA ,  UNIV SOUTHERN CALIFO,  ASHTECH Z-XII3,  175,  CD00,  AOAD/M_T,  381,  NONE, 0.6452, 0, 30, 30
 refu REFU_1992_UCSD, 2011-03-11,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.5605, 0.6248, 15, 0
 refu REFU_1992_UCSD, 2011-03-12,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.5605, 0.6248, 15, 0
 refu REFU_1992_UCSD, 2011-03-13,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.5605, 0.6248, 15, 0
 refu REFU_1992_UCSD, 2015-05-27,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA-Unkn,  ASH701945B_M,  CR619992805,  NONE, 0.7123, 0.7709, 15, 16230
 refu REFU_1992_UCSD, 2015-05-28,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR619992805,  NONE, 0.7123, 0.7709, 15, 0
 refu REFU_1992_UCSD, 2015-05-29,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR619992805,  NONE, 0.7123, 0.7709, 15, 0