benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ps98 Post_1998_USGS, 2015-05-04,  SKW ,  USGS ,  TRIMBLE 5700,  0220316023,  2.01,  TRM41249.00,  60142391,  NONE, 0.7098, 0.773, 15, 215730
 ps98 Post_1998_USGS, 1998-07-29,  RCB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 1F50,  ASH700936D_M,  CR14244,  NONE, 1.3823, 1.4298, 30, 41230
 ps98 Post_1998_USGS, 1998-07-30,  RCB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 1F50,  ASH700936D_M,  CR14244,  NONE, 1.3823, 1.4298, 30, 30
 ps98 Post_1998_USGS, 1999-07-28,  JMS ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992804,  NONE, 1.3913, 1.4388, 30, 16330
 ps98 Post_1998_USGS, 1999-07-29,  RBG ,   ,  ASHTECH,  4600 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992804,  NONE, 1.3863, 1.4338, 30, 154730
 ps98 Post_1998_USGS, 2002-07-13,  JMS ,  USGS ,  ASHTECH,  03278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.4691, 1.5159, 30, 100
 ps98 Post_1998_USGS, 2002-07-14,  JMS ,  USGS ,  ASHTECH,  03278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.4691, 1.5159, 30, 10
 ps98 Post_1998_USGS, 2002-07-15,  JMS ,  USGS ,  ASHTECH,  03278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.4691, 1.5159, 30, 10
 ps98 Post_1998_USGS, 2002-07-16,  JMS ,  USGS ,  ASHTECH,  03278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 1.4691, 1.5159, 30, 10
 ps98 Post_1998_USGS, 2005-07-24,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6034, 0.6658, 30, 16550
 ps98 Post_1998_USGS, 2005-07-25,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6034, 0.6658, 30, 0
 ps98 Post_1998_USGS, 2005-07-26,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.6034, 0.6658, 30, 0
 ps98 Post_1998_USGS, 2007-07-11,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.6761, 0.7358, 30, 172030
 ps98 Post_1998_USGS, 2007-07-12,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.6761, 0.7358, 30, 0
 ps98 Post_1998_USGS, 2007-07-13,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.6761, 0.7358, 30, 0
 ps98 Post_1998_USGS, 2009-07-20,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.5972, 0.6599, 30, 17390
 ps98 Post_1998_USGS, 2009-07-21,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.5972, 0.6599, 30, 0
 ps98 Post_1998_USGS, 2009-07-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.5972, 0.6599, 30, 0
 ps98 Post_1998_USGS, 2011-08-13,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.8816, 0.9359, 15, 162915
 ps98 Post_1998_USGS, 2011-08-14,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.8816, 0.9359, 15, 0
 ps98 Post_1998_USGS, 2011-08-15,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.8816, 0.9359, 15, 0
 ps98 Post_1998_USGS, 2011-08-16,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.8816, 0.9359, 15, 0
 ps98 Post_1998_USGS, 2011-08-17,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 0.8816, 0.9359, 15, 0
 ps98 Post_1998_USGS, 2013-07-09,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.8826, 0.9369, 15, 183315
 ps98 Post_1998_USGS, 2013-07-10,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.8826, 0.9369, 15, 0
 ps98 Post_1998_USGS, 2013-07-11,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.8826, 0.9369, 15, 0
 ps98 Post_1998_USGS, 2015-05-05,  SKW ,  USGS ,  TRIMBLE,  0220316023 ,  5700 2.01,  TRM41249.00,  60142391,  NONE, 0.7098, 0.773, 15, 30
 ps98 Post_1998_USGS, 2015-05-06,  SKW ,  USGS ,  TRIMBLE,  0220316023 ,  5700 2.01,  TRM41249.00,  60142391,  NONE, 0.7098, 0.773, 15, 30
 ps98 Post_1998_USGS, 2015-05-07,  SKW ,  USGS ,  TRIMBLE,  0220316023 ,  5700 2.01,  TRM41249.00,  60142391,  NONE, 0.7098, 0.773, 15, 30
 ps98 Post_1998_USGS, 2017-10-15,  SKW ,  USGS ,  JAVAD,  01328 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 1.0718, 1.129, 15, 400
 ps98 Post_1998_USGS, 2017-10-16,  SKW ,  USGS ,  JAVAD,  01328 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 1.0718, 1.129, 15, 0
 ps98 Post_1998_USGS, 2017-10-17,  SKW ,  USGS ,  JAVAD,  01328 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 1.0718, 1.129, 15, 0
 ps98 Post_1998_USGS, 2017-10-18,  SKW ,  USGS ,  JAVAD,  01328 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 1.0718, 1.129, 15, 0