benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 dnl3 DNL3_1952, 2002-11-11,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 10
 dnl3 DNL3_1952, 2002-11-12,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 10
 dnl3 DNL3_1952, 2002-11-13,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 10
 dnl3 DNL3_1952, 2002-11-14,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 10
 dnl3 DNL3_1952, 2002-11-15,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 30, 10
 dnl3 DNL3_1952, 2002-11-16,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-17,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-18,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-19,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-20,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-21,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-22,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-23,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-24,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-25,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-26,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-27,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-28,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-29,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-11-30,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-02,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-03,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-04,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-05,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-06,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2002-12-07,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1924, 1.2419, 15, 45
 dnl3 DNL3_1952, 2003-05-15,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2369, 1.2859, 15, 45
 dnl3 DNL3_1952, 2003-05-16,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2369, 1.2859, 15, 45
 dnl3 DNL3_1952, 2003-05-17,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2369, 1.2859, 15, 45
 dnl3 DNL3_1952, 2003-05-21,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2369, 1.2859, 15, 45
 dnl3 DNL3_1952, 2003-05-22,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2369, 1.2859, 15, 45
 dnl3 DNL3_1952, 2003-09-26,  JLS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 3945
 dnl3 DNL3_1952, 2003-09-27,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 231230
 dnl3 DNL3_1952, 2003-09-28,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 0
 dnl3 DNL3_1952, 2003-09-29,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 0
 dnl3 DNL3_1952, 2003-09-30,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 0
 dnl3 DNL3_1952, 2003-10-01,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 0
 dnl3 DNL3_1952, 2003-10-02,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE00,  ASH700936D_M,  CR14333,  NONE, 1.1813, 1.2309, 15, 0
 dnl3 DNL3_1952, 2004-06-17,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2005, 1.2499, 15, 4015
 dnl3 DNL3_1952, 2004-06-18,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2005, 1.2499, 15, 15
 dnl3 DNL3_1952, 2004-06-19,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2005, 1.2499, 15, 15
 dnl3 DNL3_1952, 2004-06-20,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2005, 1.2499, 15, 15
 dnl3 DNL3_1952, 2004-06-21,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2005, 1.2499, 15, 15