benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s) law4, 1992-07-11, JMS , USGS , ASHTECH LM-XII3, 099, 7A24, ASH700228D, 1036, NONE, 1.28, 1.3285, 30, 222530 law4, 1992-07-17, KWC , , ASHTECH LM-XII3, 762, 7A24, ASH700228D, 1036, NONE, 1.3227, 1.3708, 30, 20530 law4 LAPW4_2901_31_dor_19, 1992-08-01, MHM , USGS , ASHTECH, 361 , LM-XII3 6G, unknown, *614, Ashtech, 1.1769, 0, 5, 204935 law4, 1992-11-15, JMS , USGS , ASHTECH, 099 , LM-XII3 6M24, ASH700228D, 1036, NONE, 1.1959, 1.2453, 30, 14350 law4, 1993-10-05, CHS , USGS , ASHTECH, 831 , LM-XII3 7A, ASH700228A, 1027, NONE, 0.5886, 0.6516, 30, 172230 law4, 1994-05-15, KWC , USGS , ASHTECH, 762 , LM-XII3 7A, ASH700228A, 0745, NONE, 1.3298, 1.3778, 30, 14430 law4 LAPW4_2901_31_dor_19, 1995-02-05, KWC , USGS , ASHTECH, 4600 , Z-XII3 1E00, ASH700228A, 0745, NONE, 1.3177, 1.3658, 30, 155630 law4 LAPW4_2901_31_dor_19, 1995-11-29, JMS , USGS , ASHTECH, 4600 , Z-XII3 1F00, ASH700228D, 1036, NONE, 1.4282, 1.4753, 30, 16190 law4 LAPW4_2901_31_dor_19, 1997-01-10, GDH , , ASHTECH, O4591 , Z-XII3 1E95, ASH700228D, 1036, NONE, 1.1945, 1.2439, 30, 15550 law4 LAPW4_2901_31_dor_19, 1997-01-11, JMS , , ASHTECH, O4582 , Z-XII3 1E95, ASH700228D, 1068, NONE, 1.3026, 1.3509, 30, 16180 law4 LAPW4_2901_31_dor_19, 1997-01-15, GDH , , ASHTECH, O4579 , Z-XII3 1E95, ASH700228A, 1026, NONE, 1.2091, 1.2584, 30, 1730 law4 LAPW4_2901_31_dor_19, 1998-02-03, CHS , USGS , ASHTECH, O4597 , Z-XII3 1E95, ASH700936D_M, CR14333, NONE, 1.357, 1.4048, 30, 16390 law4 LAPW4_2901_31_dor_19, 1998-02-04, GDH , USGS , ASHTECH, 4600 , Z-XII3 1E95, ASH700936D_M, CR14341, NONE, 1.3187, 1.3668, 30, 16460 law4 LAPW4_2901_31_dor_19, 1999-10-20, GDH , USGS , ASHTECH, lp019992804 , Z-XII3 CD00, ASH700936D_M, CR14341, NONE, 1.1913, 1.2408, 30, 16230 law4 LAPW4_2901_31_dor_19, 1999-10-21, JMS , USGS , ASHTECH, lp019992803 , Z-XII3 CD00, ASH701945.02B, CR619992801, NONE, 1.4024, 1.4498, 30, 16830 law4 LAPW4_2901_31_dor_19, 1999-11-04, CHS , USGS , ASHTECH, lp019992804 , Z-XII3 CD00, ASH700936D_M, CR14341, NONE, 1.3641, 1.4118, 30, 164130 law4 LAPW4_2901_31_dor_19, 1999-11-05, JMS , USGS , ASHTECH, lp019992803 , Z-XII3 CD00, ASH701945.02B, CR619992801, NONE, 1.4105, 1.4578, 30, 16430 law4 LAPW4_2901_31_dor_19, 1999-11-17, CHS , , ASHTECH, lp019992804 , Z-XII3 CD00, ASH700936D_M, CR14341, NONE, 1.2398, 1.2887, 30, 16380 law4 LAPW4_2901_31_dor_19, 1999-11-18, CHS , , ASHTECH, lp019992804 , Z-XII3 CD00, ASH700936D_M, CR14341, NONE, 1.3197, 1.3678, 30, 162530 law4 LAPW4_2901_31_dor_19, 1999-12-15, GDH , USGS , ASHTECH, O4597 , Z-XII3 CC00, ASH701945B_M, CR519993703, NONE, 1.1964, 1.2458, 30, 16540 law4 LAPW4_2901_31_dor_19, 1999-12-16, JMS , USGS , ASHTECH, 4600 , Z-XII3 CC00, ASH700936D_M, CR14333, NONE, 0.6094, 0.6716, 30, 163930 law4 LAPW4_2901_31_dor_19, 2000-01-20, GDH , , ASHTECH, lp019992803 , Z-XII3 CD00, ASH701945B_M, CR519993705, NONE, 1.2156, 1.2648, 30, 16440 law4 LAPW4_2901_31_dor_19, 2000-01-21, CHS , , ASHTECH, LP00141 , Z-XII3 CD00, ASH700936D_M, CR14329, NONE, 1.356, 1.4038, 30, 164430 law4 LAPW4_2901_31_dor_19, 2000-02-25, GDH , , ASHTECH, LP03360 , Z-XII3 CC00, ASH701945.02B, CR619992805, NONE, 1.2014, 1.2507, 30, 163330 law4 LAPW4_2901_31_dor_19, 2000-02-26, CHS , , ASHTECH, O4579 , Z-XII3 CC00, ASH700936D_M, CR14333, NONE, 1.4196, 1.4668, 30, 16290 law4 LAPW4_2901_31_dor_19, 2000-05-03, GDH , , ASHTECH, lp019992805 , Z-XII3 CD00, ASH700936D_M, CR14341, NONE, 1.1488, 1.1988, 30, 15400 law4 LAPW4_2901_31_dor_19, 2000-05-04, JMS , , ASHTECH, O4597 , Z-XII3 CC00, ASH700936D_M, CR14330, NONE, 1.4135, 1.4608, 30, 15220 law4 LAPW4_2901_31_dor_19, 2000-11-01, GDH , , ASHTECH, 4600 , Z-XII3 CD00, ASH701945B_M, CR519993702, NONE, 1.2206, 1.2698, 30, 16500 law4 LAPW4_2901_31_dor_19, 2000-11-02, GDH , , ASHTECH, 4600 , Z-XII3 CD00, ASH701945B_M, CR519993702, NONE, 1.1781, 1.2278, 30, 16480 law4 LAPW4_2901_31_dor_19, 2001-04-22, JMS , , ASHTECH, O4597 , Z-XII3 CC00, ASH701945B_M, CR519993703, NONE, 0.5802, 0.6436, 30, 15460 law4 LAPW4_2901_31_dor_19, 2001-04-23, GDH , , ASHTECH, lp019992805 , Z-XII3 CD00, ASH701945.02B, CR619992805, NONE, 1.2277, 1.2768, 30, 15380 law4 LAPW4_2901_31_dor_19, 2002-01-25, JMS , USGS , ASHTECH, 04597 , Z-XII3 CC00, ASH701945B_M, CR619992801, NONE, 1.359, 1.4068, 30, 1720 law4 LAPW4_2901_31_dor_19, 2002-01-26, JMS , USGS , ASHTECH, 04597 , Z-XII3 CC00, ASH701945B_M, CR619992801, NONE, 1.3641, 1.4118, 30, 164430 law4 LAPW4_2901_31_dor_19, 2003-02-27, JMS , USGS , ASHTECH, LP019992803 , Z-XII3 CD00, ASH701945B_M, CR519993706, NONE, 1.3289, 1.3769, 30, 163230 law4 LAPW4_2901_31_dor_19, 2003-02-28, JMS , USGS , ASHTECH, LP019992803 , Z-XII3 CD00, ASH701945B_M, CR519993706, NONE, 1.3289, 1.3769, 30, 10 law4 LAPW4_2901_31_dor_19, 2004-04-21, GDH , USGS , ASHTECH, ZE120023204 , Z-X ZE00, ASH701945E_M, CR620022605, NONE, 1.2551, 1.3039, 30, 163230 law4 LAPW4_2901_31_dor_19, 2004-04-22, JMS , USGS , ASHTECH, ZE120023202 , Z-X ZE00, ASH700936D_M, CR14244, NONE, 1.3117, 1.3599, 30, 15480 law4 LAPW4_2901_31_dor_19, 2006-03-15, GDH , USGS , ASHTECH, ZE120023204 , Z-X ZE21, ASH700936D_M, CR14333, NONE, 1.2076, 1.2569, 30, 17430 law4 LAPW4_2901_31_dor_19, 2006-03-16, GDH , USGS , ASHTECH, ZE120023204 , Z-X ZE21, ASH700936D_M, CR14333, NONE, 1.2187, 1.2679, 30, 17260 law4 LAPW4_2901_31_dor_19, 2015-02-20, JLS , USGS , JAVAD, 00618 , TRE_G3TH SIGMA3.3.1, ASH700936D_M, CR14330, NONE, 1.1884, 1.2379, 15, 154315 law4 LAPW4_2901_31_dor_19, 2015-02-21, JLS , USGS , JAVAD, 00618 , TRE_G3TH SIGMA3.3.1, ASH700936D_M, CR14330, NONE, 1.1884, 1.2379, 15, 0