benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mntd MONT_USGS, 2011-06-22,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 1.4923, 1.5389, 15, 161915
 mntd MONT_USGS, 2011-06-23,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 1.3995, 1.4469, 15, 154615
 mntd, 2015-02-04,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.5275, 1.5739, 15, 165645
 mntd, 2015-02-05,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.3511, 1.3989, 15, 17015
 mntd, 2019-06-04,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00459,  NONE, 1.3208, 1.3689, 15, 122030
 mntd, 2019-06-07,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00585,  NONE, 1.1914, 1.2409, 15, 122630