benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 shcr, 2010-02-10,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 1.3925, 1.44, 15, 161845
 shcr, 2010-02-17,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 1.345, 1.3929, 15, 16615
 shcr, 2011-01-25,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.3279, 1.3759, 15, 165040
 shcr, 2011-01-27,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.3743, 1.4219, 15, 16440
 shcr SHCR_USGS, 2012-04-25,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 1.4882, 1.5349, 15, 16845
 shcr SHCR_USGS, 2012-04-26,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.3511, 1.3989, 15, 152245
 shcr SHCR_USGS, 2017-10-31,  ELP ,  USGS ,  JAVAD,  01337 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  01592,  NONE, 0.8079, 0.8638, 15, 143415
 shcr SHCR_USGS, 2017-11-01,  ELP ,  USGS ,  JAVAD,  01337 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  01592,  NONE, 0.7412, 0.7989, 15, 142245