benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 cusg, 2000-11-15,  CWW ,   ,  ASHTECH,  801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.3429, 1.3908, 30, 172930
 cusg, 2000-11-16,  CWW ,   ,  ASHTECH,  801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.3429, 1.3908, 30, 10
 cusg, 2004-09-16,  WRT ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.4197, 1.4669, 30, 14130
 cusg, 2004-09-17,  WRT ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.4187, 1.4659, 30, 30
 cusg, 2004-09-21,  WCH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.2784, 1.3269, 30, 15310
 cusg, 2004-09-22,  WCH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.2784, 1.3269, 30, 30
 cusg C_USGS, 2009-09-16,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.8243, 0.8798, 30, 0
 cusg C_USGS, 2009-09-17,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.8243, 0.8798, 30, 0