benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 alnc ALLEN_NCER_1977_USGS, 2006-11-01,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.5521, 0.6168, 30, 18230
 alnc ALLEN_NCER_1977_USGS, 2006-11-02,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.5521, 0.6168, 30, 0
 alnc ALLEN_NCER_1977_USGS, 2006-11-03,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.5521, 0.6168, 30, 0
 alnc ALLEN_NCER_1977_USGS, 2006-11-04,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.5521, 0.6168, 30, 0
 alnc ALLEN_NCER_1977_USGS, 2006-11-05,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.5521, 0.6168, 30, 0
 alnc ALLEN_NCER_1977_USGS, 2011-10-20,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.771, 0.8279, 15, 173015
 alnc ALLEN_NCER_1977_USGS, 2011-10-21,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.771, 0.8279, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2011-10-22,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.771, 0.8279, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2011-10-23,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.771, 0.8279, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2011-10-24,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.771, 0.8279, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-07-31,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 18315
 alnc ALLEN_NCER_1977_USGS, 2013-08-01,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-02,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-03,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-04,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-05,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-06,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0
 alnc ALLEN_NCER_1977_USGS, 2013-08-07,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.9122, 0.9659, 15, 0