benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 dr04, 2021-05-20,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  ASH700936D_M,  CR14244,  NONE, 0.8018, 0.8579, 15, 195245
 dr04, 2021-05-21,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  ASH700936D_M,  CR14244,  NONE, 0.8018, 0.8579, 15, 0
 dr04, 2022-04-11,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  JAVRINGANT_DM,  01600,  NONE, 0.8069, 0.8629, 15, 20115