benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 abrt, 2003-09-21,  WCH ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 1.1438, 1.1939, 30, 161130
 abrt, 2003-09-22,  WCH ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 1.1438, 1.1939, 30, 30
 abrt, 2003-09-23,  WCH ,  USGS ,  ASHTECH,  LP03175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16376,  NONE, 1.1438, 1.1939, 30, 30
 abrt ABRT_unstamped, 2008-10-17,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 0.5867, 0.6499, 30, 155645
 abrt ABRT_unstamped, 2008-10-18,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 0.5867, 0.6499, 30, 0
 abrt ABRT_unstamped, 2008-10-19,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 0.5867, 0.6499, 30, 0
 abrt ABRT_unstamped, 2008-10-20,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14330,  NONE, 0.5867, 0.6499, 30, 0
 abrt ABRT_unstamped, 2014-09-15,  WRT ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.1752, 1.2249, 15, 152220
 abrt ABRT_unstamped, 2014-10-22,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7761, 0.8328, 15, 0
 abrt ABRT_unstamped, 2014-10-23,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7761, 0.8328, 15, 0
 abrt ABRT_unstamped, 2014-10-24,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7761, 0.8328, 15, 0