benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pequ, 1999-09-17,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.092, 1.1428, 30, 15410
 pequ, 1999-09-21,  JTB ,  USGS ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.1427, 1.1928, 30, 154430
 pequ Pequ_stmpd_OE_158+21, 2003-06-24,  MCN ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.3894, 1.4369, 30, 155030
 pequ Pequ_stmpd_OE_158+21, 2008-02-25,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.3107, 1.3589, 30, 16400
 pequ Pequ_stmpd_OE_158+21, 2008-02-26,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.4207, 1.4679, 30, 16370
 pequ Pequ_stmpd_OE_158+21, 2008-02-27,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.8366, 0.8919, 30, 16490
 pequ Pequ_stmpd_OE_158+21, 2008-02-28,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.3763, 1.4239, 30, 163930
 pequ Pequ_stmpd_OE_158+21, 2008-09-04,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.3349, 1.3829, 30, 154130
 pequ Pequ_stmpd_OE_158+21, 2008-09-06,  JLS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 1.1813, 1.2309, 30, 135115