benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) 0108 Unknown, 1994-04-28, Steve Holdorff , National Geodetic Su, TRIMBLE 4000, 1571, SSE, TRM14532.00, 747, NONE, 2.22, 0, 15, 162615 HPGN 0108, 2001-05-20, Jeff Freymueller , Geophysical Inst/UAF, TRIMBLE 4000SSI, 14442, NP, TRM22020.00+GP, 48776, NONE, 1.4651, 0, 30, 162330 HPGN 0108, 2001-05-21, Jeff Freymueller , Geophysical Inst/UAF, TRIMBLE 4000SSI, 14442, NP, TRM22020.00+GP, 48776, NONE, 1.456, 0, 30, 1230 0108 0108_1991_CalTrans, 2004-07-27, GDH , USGS , ASHTECH, ZE1200331006 , Z-X ZE00, ASH701945B_M, CR519993702, NONE, 1.2966, 1.3449, 30, 15540