benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ME20, 2021-05-18,  JLS ,  USGS ,  TRIMBLE,  4927175164 ,  NETRS 1.3-2,  TRM57971.00,  1440925376,  NONE, 0.7813, 0.8429, 15, 183430
 ME20, 2021-05-19,  JLS ,  USGS ,  TRIMBLE,  4927175164 ,  NETRS 1.3-2,  TRM57971.00,  1440925376,  NONE, 0.7813, 0.8429, 15, 0
 me20, 2022-03-23,  JLS ,  USGS ,  SEPT,  3234503 ,  POLARX5 5.4.0,  TRM77971.00,  1551009714,  NONE, 0.7579, 0, 15, 191215
 me20, 2023-06-08,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  ASH701945B_M,  CR619992805,  NONE, 0.771, 0.8279, 15, 155330
 me20, 2023-06-09,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.7.6,  ASH701945B_M,  CR619992805,  NONE, 0.771, 0.8279, 15, 0