benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sar1 SAR_rm1_NCER, 1999-02-01,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936D_M,  CR14244,  NONE, 1.2328, 1.2818, 30, 19200
 sar1 SAR_rm1_NCER, 1999-02-02,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936D_M,  CR14244,  NONE, 1.2328, 1.2818, 30, 10