benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) shor Shore_1971_USGSNCER, 2001-10-30, CHS , USGS , ASHTECH, lp019992803 , Z-XII3 CD00, ASH701945B_M, CR619992801, NONE, 1.2954, 1.3438, 30, 181830 shor Shore_1971_USGSNCER, 2001-10-31, GDH , USGS , ASHTECH, LP00108.707 , Z-XII3 CC00, ASH700936D_M, CR14244, NONE, 1.3106, 1.3588, 30, 16460 shor Shore_1971_USGSNCER, 2006-03-09, GDH , USGS , ASHTECH, ZE120023204 , Z-X ZE21, ASH700936D_M, CR14333, NONE, 1.3046, 1.3529, 30, 16170 shor Shore_1971_USGSNCER, 2006-03-21, jms , USGS , ASHTECH, ZE1200331006 , Z-X ZE21, ASH701945E_M, CR520031626, NONE, 1.4902, 1.5369, 30, 1740