benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 knll Knolls_1983_USGS, 1998-07-21,  ECB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 1F50,  ASH700936E_C,  CR16294,  NONE, 1.2146, 1.2638, 30, 16130
 knll Knolls_1983_USGS, 1998-07-22,  ECB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 1F50,  ASH700936E_C,  CR16376,  NONE, 1.1072, 1.1577, 30, 15500
 knll Knolls_1983_USGS, 1999-07-26,  GDH ,  USGS ,  ASHTECH,  203 ,  Z-XII3 1F50,  ASH700936E_C,  CR16381,  NONE, 1.0413, 1.0928, 30, 15430
 knll Knolls_1983_USGS, 1999-07-27,  GDH ,  USGS ,  ASHTECH,  203 ,  Z-XII3 1F50,  ASH700936E_C,  CR16381,  NONE, 1.0413, 1.0928, 30, 30
 knll Knolls_1983_USGS, 2002-07-09,  JLS ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16365,  NONE, 1.161, 1.2109, 30, 16730
 knll Knolls_1983_USGS, 2002-07-10,  JLS ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16365,  NONE, 1.161, 1.2109, 30, 30
 knll Knolls_1983_USGS, 2002-07-11,  JLS ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16365,  NONE, 1.161, 1.2109, 30, 30