benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mtrl MCGEE_TRAIL_1999_USC, 2000-07-03,  TSB ,  USC ,  ASHTECH Z-XII3,  188,  CD00,  ASH700936E_C,  CR16376,  NONE, 0.5112, 0.5781, 30, 30
 mtrl MCGEE_TRAIL_1999_USC, 2000-07-04,  TAB ,  USC ,  ASHTECH Z-XII3,  319,  CC00,  ASH701945B_M,  CR519991756,  NONE, 0.5132, 0.58, 30, 12130
 mtrl MCGEE_TRAIL_1999_USC, 2000-07-12,  FCC ,  USC ,  ASHTECH Z-XII3,  192,  CD00,  ASH700936E_C,  CR16381,  NONE, 0.4365, 0.5081, 30, 12230
 mtrl MCGEE_TRAIL_1999_USC, 2000-07-13,  FCC ,  USC ,  ASHTECH Z-XII3,  192,  CD00,  ASH700936E_C,  CR16381,  NONE, 0.4365, 0.5081, 30, 30
 mtrl MCGEE_TRAIL_1999_USC, 2000-07-14,  MPP ,  USC ,  ASHTECH Z-XII3,  192,  CD00,  ASH700936E_C,  CR16381,  NONE, 0.4365, 0.5081, 30, 30
 mtrl MCGEE_TRAIL_1999_USC, 2001-07-30,  AWL ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  CR16364,  NONE, 0.5162, 0.5828, 30, 130
 mtrl MCGEE_TRAIL_1999_USC, 2001-07-31,  AWL ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  CR16364,  NONE, 0.5162, 0.5828, 30, 30
 mtrl, 2002-07-23,  SDM ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  365,  NONE, 0.55, 0.6148, 30, 10
 mtrl, 2002-07-24,  SDM ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  365,  NONE, 0.55, 0.6148, 30, 10
 mtrl, 2002-07-25,  SDM ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  365,  NONE, 0.55, 0.6148, 30, 10
 mtrl, 2002-07-26,  SOE ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  365,  NONE, 0.9509, 1.0038, 30, 10
 mtrl, 2002-07-27,  SOE ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  365,  NONE, 0.9519, 1.0048, 30, 10
 mtrl MCGEE_TRAIL_1999_USC, 2015-02-14,  SKW ,  USGS ,  TRIMBLE 5700,  0220320138,  2.01,  TRM41249.00,  60194583,  NONE, 0.6801, 0.7441, 15, 30
 mtrl, 2010-07-15,  JMS ,  USGS ,  TRIMBLE,  0220320141 ,  5700 NP,  TRM41249.00,  12578430,  NONE, 0.6436, 0.7086, 15, 165045
 mtrl, 2010-07-16,  JMS ,  USGS ,  TRIMBLE,  0220320141 ,  5700 NP,  TRM41249.00,  12578430,  NONE, 0.6436, 0.7086, 15, 30
 mtrl, 2010-07-17,  JMS ,  USGS ,  TRIMBLE,  0220320141 ,  5700 NP,  TRM41249.00,  12578430,  NONE, 0.6436, 0.7086, 15, 30
 mtrl MCGEE_TRAIL_1999_USC, 2011-08-13,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 0.7463, 0.8039, 15, 18045
 mtrl MCGEE_TRAIL_1999_USC, 2011-08-14,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 0.7463, 0.8039, 15, 0
 mtrl MCGEE_TRAIL_1999_USC, 2011-08-15,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 0.7463, 0.8039, 15, 0
 mtrl MCGEE_TRAIL_1999_USC, 2011-08-16,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945B_M,  CR519993706,  NONE, 0.7463, 0.8039, 15, 0
 mtrl MCGEE_TRAIL_1999_USC, 2012-07-08,  CalVO ,  USGS ,  TRIMBLE,  4921173221 ,  NETRS 1.2-5,  TRM29659.00,  30895502,  NONE, 1.1933, 0, 15, 18420
 mtrl MCGEE_TRAIL_1999_USC, 2012-07-09,  CalVO ,  USGS ,  TRIMBLE,  4921173221 ,  NETRS 1.2-5,  TRM29659.00,  30895502,  NONE, 1.1933, 0, 15, 30
 mtrl MCGEE_TRAIL_1999_USC, 2013-07-14,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8192, 0.8749, 15, 142915
 mtrl MCGEE_TRAIL_1999_USC, 2013-07-15,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8192, 0.8749, 15, 0
 mtrl MCGEE_TRAIL_1999_USC, 2013-07-16,  JLS ,  USGS ,  JAVAD,  00588 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.8192, 0.8749, 15, 0
 mtrl MCGEE_TRAIL_1999_USC, 2015-02-11,  SKW ,  USGS ,  TRIMBLE,  0220320138 ,  5700 2.01,  TRM41249.00,  60194583,  NONE, 0.6801, 0.7441, 15, 1315
 mtrl MCGEE_TRAIL_1999_USC, 2015-02-12,  SKW ,  USGS ,  TRIMBLE,  0220320138 ,  5700 2.01,  TRM41249.00,  60194583,  NONE, 0.6801, 0.7441, 15, 30
 mtrl MCGEE_TRAIL_1999_USC, 2015-02-13,  SKW ,  USGS ,  TRIMBLE,  0220320138 ,  5700 2.01,  TRM41249.00,  60194583,  NONE, 0.6801, 0.7441, 15, 30
 mtrl MCGEE_TRAIL_1999_USC, 2017-06-28,  EMB ,  USGS ,  JAVAD,  00478 ,  TRE_G3TH SIGMA-Unkn,  TRM41249.00,  60142391,  NONE, 0.7231, 0.786, 15, 2340
 mtrl MCGEE_TRAIL_1999_USC, 2017-06-29,  EMB ,  USGS ,  JAVAD,  00478 ,  TRE_G3TH SIGMA-Unkn,  TRM41249.00,  60142391,  NONE, 0.7231, 0.786, 15, 0