benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 stee, 2003-09-23,  WCH ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2935, 1.3419, 30, 10
 stee Steens_1935_USC&GS, 2008-10-23,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 0.7071, 0.7658, 30, 0
 stee Steens_1935_USC&GS, 2008-10-24,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 0.7071, 0.7658, 30, 0
 stee Steens_1935_USC&GS, 2008-10-25,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 0.7071, 0.7658, 30, 0
 stee Steens_1935_USC&GS, 2014-09-19,  WRT ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.4096, 1.4569, 15, 163715