benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 brek Break_1977_USGS, 1992-04-14,  KWC ,  USGS ,  ASHTECH,  765 ,  LM-XII3 6b,  ASH700228D,  1058,  NONE, 1.4282, 1.4753, 30, 1630
 brek Break_1977_USGS, 1993-05-10,  CHS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 6M24,  ASH700228D,  1058,  NONE, 1.4794, 1.5262, 30, 3030
 brek Break_1977_USGS, 1993-11-16,  JMS ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.4795, 1.5263, 30, 15590
 brek Break_1977_USGS, 1996-05-12,  JMS ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.5514, 1.5976, 30, 155730
 brek Break_1977_USGS, 1996-05-13,  JMS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.5233, 1.5697, 30, 15530
 brek Break_1977_USGS, 2001-05-24,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 18250
 brek Break_1977_USGS, 2001-05-25,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 10
 brek Break_1977_USGS, 2001-05-26,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 10
 brek Break_1977_USGS, 2001-05-27,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 10
 brek Break_1977_USGS, 2001-05-28,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 10
 brek Break_1977_USGS, 2001-05-29,  CHS ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.4508, 1.4978, 30, 10
 brek Break_1977_USGS, 2003-04-01,  CHS ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.3894, 1.4369, 30, 10
 brek Break_1977_USGS, 2003-04-02,  CHS ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.3894, 1.4369, 30, 10
 brek Break_1977_USGS, 2005-04-27,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 17590
 brek Break_1977_USGS, 2005-04-28,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2005-04-29,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2005-04-30,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2005-05-01,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2005-05-02,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2005-05-03,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3198, 1.3679, 30, 0
 brek Break_1977_USGS, 2006-05-24,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.4419, 1.4889, 30, 0
 brek Break_1977_USGS, 2006-05-25,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.4429, 1.4899, 30, 0
 brek Break_1977_USGS, 2006-05-26,  GDH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 1.4429, 1.4899, 30, 0
 brek Break_1977_USGS, 2009-03-28,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 1.4681, 1.5149, 30, 153830
 brek Break_1977_USGS, 2009-03-29,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 1.4681, 1.5149, 30, 0
 brek Break_1977_USGS, 2015-04-29,  JMS ,  USGS ,  ASHTECH,  ZE1200411029 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9417, 0.9948, 15, 0
 brek Break_1977_USGS, 2015-04-30,  JMS ,  USGS ,  ASHTECH,  ZE1200411029 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9417, 0.9948, 15, 0