benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ymr2, 1996-04-20,  JMS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.1955, 1.2449, 30, 155430
 ymr2 Yam_No2_1941_USC&GS, 1997-02-27,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E95,  ASH700228D,  1036,  NONE, 1.1608, 1.2107, 30, 17120
 ymr2 Yam_No2_1941_USC&GS, 1997-02-28,  GDH ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E95,  ASH700228D,  1036,  NONE, 1.1608, 1.2107, 30, 30
 ymr2 Yam_No2_1941_USC&GS, 1998-10-23,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.1326, 1.1828, 30, 171630
 ymr2 Yam_No2_1941_USC&GS, 1998-10-24,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14330,  NONE, 1.1326, 1.1828, 30, 10
 ymr2 Yam_No2_1941_USC&GS, 2000-04-11,  GDH ,   ,  ASHTECH,  O4582 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992805,  NONE, 1.257, 1.3057, 30, 16240
 ymr2 Yam_No2_1941_USC&GS, 2000-04-12,  GDH ,   ,  ASHTECH,  O4582 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992805,  NONE, 1.257, 1.3057, 30, 10
 ymr2 Yam_No2_1941_USC&GS, 2010-03-27,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.0516, 1.1029, 15, 18445
 ymr2 Yam_No2_1941_USC&GS, 2010-03-28,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.0516, 1.1029, 15, 0
 ymr2 Yam_No2_1941_USC&GS, 2010-03-29,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.0516, 1.1029, 15, 0
 ymr2 Yam_No2_1941_USC&GS, 2011-03-17,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 1.1357, 1.1859, 15, 0
 ymr2 Yam_No2_1941_USC&GS, 2011-03-18,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 1.1357, 1.1859, 15, 0