benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 wlr3 Willow_No3_1984_NCER, 1994-03-21,  GDH ,  USGS ,  ASHTECH LM-XII3,  765,  7A,  ASH700228D,  1058,  NONE, 1.0993, 1.15, 30, 0
 wlr3 Willow_No3_1984_NCER, 1994-03-18,  GDH ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.0983, 1.1489, 30, 17130
 wlr3 Willow_No3_1984_NCER, 1994-03-19,  GDH ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.0983, 1.1489, 30, 0
 wlr3 Willow_No3_1984_NCER, 1994-03-20,  GDH ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.0993, 1.15, 30, 0
 wlr3 Willow_No3_1984_NCER, 1994-03-22,  CHS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.0973, 1.148, 30, 15450
 wlr3 Willow_No3_1984_NCER, 2002-04-08,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993703,  NONE, 1.1651, 1.2149, 30, 18330
 wlr3 Willow_No3_1984_NCER, 2002-04-09,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993703,  NONE, 1.1651, 1.2149, 30, 10
 wlr3 Willow_No3_1984_NCER, 2002-04-10,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993703,  NONE, 1.1651, 1.2149, 30, 10
 wlr3 Willow_No3_1984_NCER, 2006-04-25,  JMS ,  USGS ,  ASHTECH,  ZE1200411029 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 1.081, 1.1319, 30, 0
 wlr3 Willow_No3_1984_NCER, 2006-04-26,  JMS ,  USGS ,  ASHTECH,  ZE1200411029 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 1.081, 1.1319, 30, 0