benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 para, 1999-09-11,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 1.3621, 1.4098, 30, 154530
 para, 1999-09-25,  GWB ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992801,  NONE, 1.351, 1.3988, 30, 15400
 para Para_Stmpd_S424_1984, 2003-06-22,  SAH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.5245, 1.5709, 30, 155730
 para Para_Stmpd_S424_1984, 2003-06-29,  CWW ,  USGS ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.6987, 1.744, 30, 15530
 para Para_Stmpd_S424_1984, 2008-09-13,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 1.4681, 1.5149, 30, 14615
 para Para_Stmpd_S424_1984, 2008-09-16,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.5144, 1.5609, 30, 15830