benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) 1315 Q1315_1977_NGS, 1998-07-07, unknown , CALIF DEPT TRANSPORT, TRIMBLE 4000SSE, 4869, NP, TRM22020.00+GP, 76725, NONE, 2, 0, 15, 153115 1315 Q1315_1977_NGS, 1998-07-08, unknown , CALIF DEPT TRANSPORT, TRIMBLE 4000SSE, 4869, NP, TRM22020.00+GP, 76725, NONE, 2, 0, 15, 201715 1315 Q1315_1977_NGS, 1998-07-09, unknown , CALIF DEPT TRANSPORT, TRIMBLE 4000SSE, 4869, NP, TRM22020.00+GP, 76725, NONE, 2, 0, 15, 201315 1315 Q1315_1977_NGS, 2007-10-23, JMS , USGS , ASHTECH, ZE120023202 , Z-X ZE21, ASH701945E_M, CR520031615, NONE, 0.7102, 0.7688, 30, 1660 1315 Q1315_1977_NGS, 2007-10-24, JMS , USGS , ASHTECH, ZE120023202 , Z-X ZE21, ASH701945E_M, CR520031615, NONE, 0.6409, 0.7019, 30, 155630 1315 Q1315_1977_NGS, 2008-10-28, JMS , USGS , ASHTECH, LP00108.707 , Z-XII 1L00, ASH700936D_M, CR14329, NONE, 0.645, 0.7059, 30, 162230 1315 Q1315_1977_NGS, 2008-10-29, JMS , USGS , ASHTECH, LP00108.707 , Z-XII 1L00, ASH700936D_M, CR14329, NONE, 0.645, 0.7059, 30, 30 1315 Q1315_1977_NGS, 2010-05-26, JLS , USGS , ASHTECH, ZE1200331006 , Z-X ZE210, ASH700936D_M, CR14333, NONE, 0.9499, 1.0029, 15, 152645 1315 Q1315_1977_NGS, 2011-10-21, CHS , USGS , ASHTECH, ZE120023208 , Z-X ZE210, ASH701945E_M, CR620022605, NONE, 1.4499, 1.4969, 15, 155445 1315 Q1315_1977_NGS, 2024-07-19, ELP , USGS , JAVAD, 01663 , TRE_G3TH SIGMA3.7.6, JAVRINGANT_DM, 00587, NONE, 0.8069, 0.8629, 15, 16150 1315 Q1315_1977_NGS, 2024-07-20, ELP , USGS , JAVAD, 01663 , TRE_G3TH SIGMA3.7.6, JAVRINGANT_DM, 00587, NONE, 0.8069, 0.8629, 15, 0 1315 Q1315_1977_NGS, 2024-07-21, ELP , USGS , JAVAD, 01663 , TRE_G3TH SIGMA3.7.6, JAVRINGANT_DM, 00587, NONE, 0.8069, 0.8629, 15, 0 1315 Q1315_1977_NGS, 2024-07-22, ELP , USGS , JAVAD, 01663 , TRE_G3TH SIGMA3.7.6, JAVRINGANT_DM, 00587, NONE, 0.8069, 0.8629, 15, 0