benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 donk, 2003-09-13,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.1772, 1.2269, 30, 17520
 donk, 2003-09-14,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.1772, 1.2269, 30, 10
 donk, 2003-09-15,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.1772, 1.2269, 30, 10
 donk DONK_USGS, 2007-09-19,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.4855, 0.5538, 30, 17380
 donk DONK_USGS, 2007-09-20,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.4855, 0.5538, 30, 0
 donk DONK_USGS, 2012-09-22,  SAH ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.55, 0.6148, 15, 151745
 donk DONK_USGS, 2012-09-23,  SAH ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.55, 0.6148, 15, 0
 donk DONK_USGS, 2012-09-24,  SAH ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.55, 0.6148, 15, 0