benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 scho School_1990_NGS, 1996-06-10,  unknown ,  CVO ,  Trimble 4000SSE,  03583,  GammaNP,  TRM14532.00,  688540,  NONE, 1.3052, 0, 30, 141430
 scho School_1990_NGS, 1996-06-11,  unknown ,  CVO ,  Trimble 4000SSE,  03583,  GammaNP,  TRM14532.00,  688540,  NONE, 1.3537, 0, 30, 1450
 scho School_1990_NGS, 2002-08-15,  JMS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.5769, 1.6229, 30, 17110
 scho School_1990_NGS, 2004-08-20,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.4035, 1.4508, 30, 15240
 scho School_1990_NGS, 2004-08-21,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE00,  ASH701945E_M,  CR620022602,  NONE, 1.4691, 1.5159, 30, 15460