benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) 0111-1, 2001-05-21, UAF/HSU , UAF/HSU , TRIMBLE 4000SSI, 25543, NP, TRM22020.00+GP, 50481, NONE, 1.6834, 0, 30, 161630 0111-2, 2001-05-22, UAF/HSU , UAF/HSU , TRIMBLE 4000SSI, 25543, NP, TRM22020.00+GP, 50481, NONE, 1.6309, 0, 30, 15730 h111 HPGN_01-11_1991_Cal_T, 2001-07-18, JMS , , ASHTECH Z-XII3, LP03360, CC00, ASH700936D_M, CR14244, NONE, 1.4428, 1.4898, 30, 16170 h111 HPGN_01-11_1991_CalTr, 2005-06-25, CHS , USGS , ASHTECH Z-XII3, LP019992809, CD00, ASH701945E_M, CR620022601, NONE, 1.3481, 1.3959, 30, 15530 h111 HPGN_01-11_1991_Cal_T, 2005-06-26, GDH , USGS , ASHTECH Z-X, ZE120023204, ZE21, ASH701945B_M, CR519993703, NONE, 1.1843, 1.2338, 30, 15580