benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 94fm, 1999-09-20,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.5446, 1.5909, 30, 155830
 94fm, 1999-09-23,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.5133, 1.5598, 30, 15590
 94fm 94FMK_Elev_3922_FF_1, 2003-06-27,  WCH ,  USGS ,  ASHTECH,  LP02232 ,  Z-XII3 6J00,  ASH701945E_M,  CR620022605,  NONE, 1.3208, 1.3689, 30, 171125
 94fm 94FMK_Elev_3922_FF_1, 2003-06-30,  CWW ,  USGS ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.5215, 1.5679, 30, 162430
 94fm 94FMK_Elev_3922_FF_1, 2008-10-22,  JLS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII 1L00,  ASH701945E_M,  CR520031615,  NONE, 1.3622, 1.4099, 30, 15360
 94fm 94FMK_Elev_3922_FF_1, 2008-10-26,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 1.3147, 1.3629, 30, 162130
 94fm 94FMK_Elev_3922_FF_1, 2014-09-23,  WRT ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 1.341, 1.3889, 15, 145245
 94fm 94FMK_Elev_3922_FF_1, 2014-10-22,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031622,  NONE, 0.7463, 0.8039, 15, 21210
 94fm 94FMK_Elev_3922_FF_1, 2014-10-23,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031622,  NONE, 0.7463, 0.8039, 15, 0