benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 shon, 1994-06-23,  unknown ,  NGS ,  TRIMBLE 4000SST,  1571,  5.60,  TRM14532.00,  747,  NONE, 2.22, 0, 15, 172615
 shon, 1994-06-29,  unknown ,  NGS ,  TRIMBLE 4000SSE,  1571,  5.60,  TRM14532.00,  747,  NONE, 2.22, 0, 15, 17215
 shon, 2000-11-15,  WRT ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.1994, 1.2488, 30, 172530
 shon, 2000-11-16,  WRT ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.1994, 1.2488, 30, 130
 shon, 2000-11-17,  WRT ,   ,  ASHTECH,  4600 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.1994, 1.2488, 30, 10
 shon, 2004-09-16,  WRT ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.3521, 1.3999, 30, 16630
 shon, 2004-09-21,  WCH ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.4086, 1.4559, 30, 16320
 shon SHONE_1958_USCGS, 2009-09-15,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.3117, 1.3599, 30, 0
 shon SHONE_1958_USCGS, 2009-09-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.3117, 1.3599, 30, 0