benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 grlz Granite_LZ_94_USGS, 1994-03-24,  KWC ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.2121, 1.2613, 30, 163130
 grlz Granite_LZ_94_USGS, 2002-04-03,  JMS ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2774, 1.3259, 30, 10
 grlz Granite_LZ_94_USGS, 2002-04-04,  JMS ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2774, 1.3259, 30, 10
 grlz Granite_LZ_94_USGS, 2006-04-19,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE21,  ASH700936A_M,  11477,  NONE, 1.1874, 0, 30, 0
 grlz Granite_LZ_94_USGS, 2006-04-20,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE21,  ASH700936A_M,  11477,  NONE, 1.1874, 0, 30, 0
 grlz Granite_LZ_94_USGS, 2006-04-21,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE21,  ASH700936A_M,  11477,  NONE, 1.1874, 0, 30, 0
 grlz LZ_GRANI_94_USGS, 2011-07-07,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.5152, 0.5818, 15, 172615
 grlz LZ_GRANI_94_USGS, 2011-07-08,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.5152, 0.5818, 15, 0
 grlz LZ_GRANI_94_USGS, 2011-07-09,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.5152, 0.5818, 15, 0
 grlz LZ_GRANI_94_USGS, 2011-07-10,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.5152, 0.5818, 15, 0