benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) gull Gull_1985_USGS, 2015-02-17, SKW , USGS , TRIMBLE 5700, 0220320138, 2.01, TRM41249.00, 60194583, NONE, 0.7538, 0.816, 15, 231230 gull Gull_1985_USGS, 2015-02-21, SKW , USGS , TRIMBLE 5700, 0220320138, 2.01, TRM41249.00, 60194583, NONE, 0.7538, 0.816, 15, 30 gull Gull_1985_USGS, 1998-07-23, ECB , USGS , ASHTECH, 188 , Z-XII3 1F50, ASH700936E_C, CR16376, NONE, 1.4901, 1.5368, 30, 15140 gull Gull_1985_USGS, 1998-07-24, JLS , USGS , ASHTECH, LP03360 , Z-XII3 CB00, ASH700936D_M, CR14330, NONE, 1.1427, 1.1928, 30, 15500 gull Gull_1985_USGS, 1999-07-22, GDH , , ASHTECH, 203 , Z-XII3 1F50, ASH700936E_C, CR16379, NONE, 1.258, 1.3067, 30, 1670 gull Gull_1985_USGS, 1999-07-23, RBG , , ASHTECH, 4600 , Z-XII3 CC00, ASH700936D_M, CR14341, NONE, 1.2206, 1.2698, 30, 15290 gull Gull_1985_USGS, 2002-07-12, CWA , USGS , ASHTECH, 04600 , Z-XII3 CD00, ASH701945B_M, CR519993706, NONE, 1.2693, 1.3179, 30, 164630 gull Gull_1985_USGS, 2002-07-15, JLS , USGS , ASHTECH, LP03174 , Z-XII3 CD00, ASH700936E_C, CR16379, NONE, 1.1671, 1.2169, 30, 153030 gull Gull_1985_USGS, 2005-07-24, GDH , USGS , ASHTECH, ZE120023204 , Z-X ZE21, ASH700936D_M, CR14333, NONE, 1.1732, 1.2229, 30, 155430 gull Gull_1985_USGS, 2005-07-26, JMS , USGS , ASHTECH, ZE120033802 , Z-X ZE21, ASH701945E_M, CR520031626, NONE, 1.3541, 1.4019, 30, 1600 gull Gull_1985_USGS, 2007-07-21, JMS , USGS , ASHTECH, ZE1200526028 , Z-X ZE21, ASH701945B_M, CR619992805, NONE, 0.6885, 0.7478, 30, 151030 gull Gull_1985_USGS, 2007-07-24, GDH , USGS , ASHTECH, ZE1200331018 , Z-X ZE21, ASH700936D_M, CR14330, NONE, 0.5532, 0.6178, 30, 165630 gull Gull_1985_USGS, 2009-07-17, JMS , USGS , ASHTECH, 579 , Z-XII 1L001, ASH700936D_M, CR14330, NONE, 1.4025, 1.4499, 30, 16630 gull Gull_1985_USGS, 2009-07-19, CHS , USGS , ASHTECH, ZE120023208 , Z-X ZE210, ASH701945E_M, CR620022602, NONE, 1.2208, 1.27, 30, 154930 gull Gull_1985_USGS, 2011-08-11, CHS , USGS , ASHTECH, LP019992804 , Z-XII 1L001, ASH700936D_M, CR14341, NONE, 1.4882, 1.5349, 15, 154445 gull Gull_1985_USGS, 2011-08-12, CHS , USGS , ASHTECH, LP019992804 , Z-XII 1L001, ASH700936D_M, CR14341, NONE, 1.1712, 1.2209, 15, 153745 gull Gull_1985_USGS, 2013-07-10, JMS , USGS , ASHTECH, ZE120023202 , Z-X ZE210, ASH700936D_M, CR14341, NONE, 1.3925, 1.44, 15, 16115 gull Gull_1985_USGS, 2013-07-11, JLS , USGS , JAVAD, 00620 , TRE_G3TH SIGMA3.3.1, ASH701945B_M, CR519993703, NONE, 1.2076, 1.2569, 15, 134615 gull Gull_1985_USGS, 2015-02-18, SKW , USGS , TRIMBLE, 0220320138 , 5700 2.01, TRM41249.00, 60194583, NONE, 0.7538, 0.816, 15, 30 gull Gull_1985_USGS, 2015-02-19, SKW , USGS , TRIMBLE, 0220320138 , 5700 2.01, TRM41249.00, 60194583, NONE, 0.7538, 0.816, 15, 30 gull Gull_1985_USGS, 2015-02-20, SKW , USGS , TRIMBLE, 0220320138 , 5700 2.01, TRM41249.00, 60194583, NONE, 0.7538, 0.816, 15, 30