benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ALTU, 1998-09-09,  TOM G WILKINS ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  4888,  Nav,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 135215
 altu, 1999-08-01,  UC BERKELEY ,   ,  TRIMBLE,  14630 ,  4000SSI 7.29,  TRM29659.00,  73541,  NONE, 1.0756, 0, 30, 16430
 altu, 1999-08-02,  UC BERKELEY ,   ,  TRIMBLE,  14631 ,  4000SSI 7.29,  TRM29659.00,  73545,  NONE, 1.1067, 0, 30, 16310
 altu, 1999-08-03,  UC BERKELEY ,   ,  TRIMBLE,  14630 ,  4000SSI 7.29,  TRM29659.00,  73541,  NONE, 1.2105, 0, 30, 1730
 altu, 1999-09-14,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.6552, 0.7156, 30, 153830
 altu, 1999-09-25,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.6271, 0.6886, 30, 152730
 altu, 2003-06-21,  ETE ,  USGS CVO ,  ASHTECH,  LP019992604 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993302,  NONE, 1.1853, 1.2349, 30, 135630
 altu, 2003-06-26,  ETE ,  USGS CVO ,  ASHTECH,  LP019992604 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993302,  NONE, 1.2015, 1.2509, 30, 14830
 altu Altu_C93_1931_USC&GS, 2008-09-13,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6978, 0.7568, 30, 16730
 altu Altu_C93_1931_USC&GS, 2008-09-16,  SAH ,  USGS ,  ASHTECH,  579 ,  Z-XII 1L00,  ASH700936D_M,  CR14244,  NONE, 1.2875, 1.336, 30, 155130
 altu Altu_C93_1931_USC&GS, 2013-09-09,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.2955, 1.3439, 15, 161845
 altu Altu_C93_1931_USC&GS, 2013-09-10,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 0.7412, 0.7989, 15, 142815