benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sale Sale_No.1_1972_CalDi, 2003-03-10,  JMS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.3551, 1.4029, 30, 17100
 sale Sale_No.1_1972_CalDi, 2003-03-11,  JMS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2986, 1.3469, 30, 1740
 sale Sale_No.1_1972_CalDi, 2006-03-01,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.1965, 1.2459, 30, 17330
 sale Sale_No.1_1972_CalDi, 2006-03-02,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.1985, 1.2479, 30, 1750
 sale Sale_No.1_1972_CalDi, 2012-02-29,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.3995, 1.4469, 15, 165745
 sale Sale_No.1_1972_CalDi, 2012-03-01,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.3874, 1.4349, 15, 165015
 sale Sale_No.1_1972_CalDi, 2022-08-24,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00580,  NONE, 0.6803, 0.7399, 15, 154915
 sale Sale_No.1_1972_CalDi, 2022-08-25,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  00580,  NONE, 0.6284, 0.6898, 15, 151445