benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 l091, 1999-09-16,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14244,  NONE, 1.1184, 1.1688, 30, 16290
 l091, 1999-09-25,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1356, 1.1858, 30, 16170
 l091 L91_1934_USC&GS, 2003-06-23,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945B_M,  CR519993703,  NONE, 1.1013, 1.1519, 30, 165330
 l091 L91_1934_USC&GS, 2003-06-24,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.1914, 1.2409, 30, 15510
 l091 L91_1934_USC&GS, 2008-10-29,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  0220264600 ,  5700 NP,  TRM41249.00,  60142391,  NONE, 1.1666, 1.2228, 15, 3130
 l091 L91_1934_USC&GS, 2014-09-14,  SAH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 0.2896, 0.3757, 15, 16045
 l091 L91_1934_USC&GS, 2014-10-27,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 1.2005, 1.2499, 15, 145145