benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 154s, 2003-09-20,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.1519, 1.2019, 30, 161930
 154s, 2003-09-21,  JMS ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.2218, 1.2709, 30, 14500
 154s 154_SC_1952_USGS, 2007-09-19,  SBM ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L00,  ASH701945B_M,  CR519993706,  NONE, 1.1985, 1.2479, 30, 15540
 154s 154_SC_1952_USGS, 2007-09-29,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.1823, 1.2319, 30, 133245
 154s 154_SC_1952_USGS, 2015-09-17,  JLS ,  USGS ,  JAVAD,  01663 ,  TRE_G3TH SIGMA3.5.9,  ASH700936D_M,  CR14341,  NONE, 0.7205, 0.7788, 15, 164315
 154s 154_SC_1952_USGS, 2015-09-18,  JLS ,  USGS ,  JAVAD,  01663 ,  TRE_G3TH SIGMA3.5.9,  ASH700936D_M,  CR14341,  NONE, 0.7205, 0.7788, 15, 0
 154s 154_SC_1952_USGS, 2015-09-30,  WRT ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 1.2774, 1.3259, 15, 1015