benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 br02, 1999-09-11,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 0.071, 0.217, 30, 155630
 br02, 1999-09-22,  CHS ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.083, 0.2231, 30, 15220
 br02 BR2_1987_USCE, 2003-10-30,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH701945B_M,  CR619992805,  NONE, 0.11, 0.2385, 30, 16340
 br02 BR2_1987_USCE, 2003-10-31,  JMS ,   ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH701945B_M,  CR619992805,  NONE, 0.11, 0.2385, 30, 16340
 br02 BR2_1987_USCE, 2008-10-09,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  220214232 ,  4700 NP,  TRM41249.00,  60059999,  NONE, 0.075, 0.2075, 30, 0
 br02 BR2_1987_USCE, 2008-10-10,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  220214232 ,  4700 NP,  TRM41249.00,  60059999,  NONE, 0.075, 0.2075, 30, 30