benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 cah3 Cahto_No3_1880_1942_, 2001-07-10,  GDH ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH700936D_M,  CR14341,  NONE, 1.1832, 1.2328, 30, 10
 cah3 Cahto_No3_1880_1942_, 2001-07-11,  GDH ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH700936D_M,  CR14341,  NONE, 1.1832, 1.2328, 30, 10