benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hstn, 1999-09-14,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.5181, 0.5846, 30, 15430
 hstn, 1999-09-24,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.1559, 1.2058, 30, 145030
 hstn HSTN_stmpd_Q2_1968_U, 2003-11-01,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.2561, 1.3049, 30, 175330
 hstn HSTN_stmpd_Q2_1968_U, 2003-11-02,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.2561, 1.3049, 30, 155430
 hstn HSTN_stmpd_Q2_1968_U, 2003-11-03,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.2561, 1.3049, 30, 10
 hstn HSTN_stmpd_Q2_1968_U, 2008-10-08,  BP ,  USGS/Cascades Volcan,  TRIMBLE,  220211182 ,  4700 NP,  TRM41249.00,  60052133,  NONE, 1.0529, 1.1103, 30, 0
 hstn HSTN_stmpd_Q2_1968_U, 2008-10-09,  BP ,  USGS/Cascades Volcan,  TRIMBLE,  220211182 ,  4700 NP,  TRM41249.00,  60052133,  NONE, 1.0529, 1.1103, 30, 30