benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 tupp Tup_1988_NCER, 1998-07-21,  JLS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F50,  ASH700936E_C,  CR16379,  NONE, 1.1771, 1.2267, 30, 162930
 tupp Tup_1988_NCER, 1998-07-22,  JLS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F50,  ASH700936E_C,  CR16379,  NONE, 1.1771, 1.2267, 30, 30
 tupp Tup_1988_NCER, 1999-07-22,  JLS ,   ,  ASHTECH,  174 ,  Z-XII3 CB00,  ASH701945B_M,  CR619992802,  NONE, 1.256, 1.3047, 30, 173430
 tupp Tup_1988_NCER, 1999-07-23,  JLS ,   ,  ASHTECH,  174 ,  Z-XII3 CB00,  ASH701945B_M,  CR619992802,  NONE, 1.256, 1.3047, 30, 10
 tupp Tup_1988_NCER, 1999-07-24,  JLS ,   ,  ASHTECH,  174 ,  Z-XII3 CB00,  ASH701945B_M,  CR619992802,  NONE, 1.256, 1.3047, 30, 10
 tupp Tup_1988_NCER, 2002-07-12,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.3662, 1.4139, 30, 174630
 tupp Tup_1988_NCER, 2002-07-13,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.3662, 1.4139, 30, 10
 tupp Tup_1988_NCER, 2002-07-14,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.3662, 1.4139, 30, 10