benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 leac Leach_1956_USC&GS, 1994-03-21,  JMS ,  USGS ,  ASHTECH LM-XII3,  831,  7A,  ASH700228A,  1027,  NONE, 1.191, 1.2405, 30, 204830
 leac Leach_1956_USC&GS, 2002-03-07,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.1347, 1.1849, 30, 10
 leac Leach_1956_USC&GS, 2006-04-20,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.1904, 1.2399, 30, 0
 leac Leach_1956_USC&GS, 2006-04-21,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.1904, 1.2399, 30, 0
 leac Leach_1956_USC&GS, 2006-04-22,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.1904, 1.2399, 30, 0
 leac Leach_1926_USC&GS, 2011-07-09,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6575, 0.7179, 15, 174315
 leac Leach_1926_USC&GS, 2011-07-10,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6575, 0.7179, 15, 0
 leac Leach_1926_USC&GS, 2011-07-11,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6575, 0.7179, 15, 0
 leac Leach_1926_USC&GS, 2011-07-12,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 0.6575, 0.7179, 15, 0