benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 wilo, 1999-09-12,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.3572, 0.4355, 30, 16250
 wilo, 1999-09-24,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.424, 0.4964, 30, 12930
 wilo Wilo_USGS, 2003-06-22,  WCH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.1114, 1.1619, 30, 16340
 wilo Wilo_USGS, 2003-06-23,  WCH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.1114, 1.1619, 30, 0
 wilo, 2003-06-29,  SAH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.0871, 1.1379, 30, 1620
 wilo, 2003-06-30,  SAH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.0871, 1.1379, 30, 10
 wilo Wilo_USGS, 2008-09-09,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.702, 0.7609, 30, 0
 wilo Wilo_USGS, 2008-09-10,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.702, 0.7609, 30, 0
 wilo Wilo_USGS, 2008-09-11,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.702, 0.7609, 30, 0
 wilo Wilo_USGS, 2008-09-12,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.702, 0.7609, 30, 0