benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pitr, 1999-09-10,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.0809, 1.1318, 30, 15480
 pitr, 1999-09-28,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.0829, 1.1338, 30, 15370
 pitr, 2003-06-17,  Poland ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  66915,  NONE, 1.0656, 0, 30, 151830
 pitr, 2003-06-20,  Poland ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  66915,  NONE, 1.0991, 0, 30, 1530
 pitr Pitr_02-LN_1996_CalT, 2008-09-10,  SAH ,  USGS ,  ASHTECH,  579 ,  Z-XII 1L00,  ASH701945E_M,  CR520031626,  NONE, 1.4741, 1.5209, 30, 16530
 pitr Pitr_02-LN_1996_CalT, 2008-09-11,  JMS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945E_M,  CR620022605,  NONE, 0.9804, 1.0329, 30, 14590
 pitr Pitr_02-LN_1996_CalT, 2013-09-05,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.592, 1.6379, 15, 16615
 pitr Pitr_02-LN_1996_CalT, 2013-09-06,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.6292, 1.6749, 15, 15945