benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 dmav 8115_DOPP_11989_1990, 2007-10-20,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.5487, 1.5949, 30, 15370
 dmav 8115_DOPP_11989_1990, 2007-10-21,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.464, 1.5109, 30, 15360
 dmav 8115_DOPP_11989_1990, 2008-10-23,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.5084, 1.5549, 30, 153530
 dmav 8115_DOPP_11989_1990, 2008-10-24,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.3874, 1.4349, 30, 15300
 dmav 8115_DOPP_11989_1990, 2010-05-20,  CHS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.4782, 1.5249, 15, 152915
 dmav 8115_DOPP_11989_1990, 2010-05-22,  CHS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.4146, 1.4619, 15, 144645
 dmav 8115_DOPP_11989_1990, 2015-04-01,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 0.9458, 0.9988, 15, 0
 dmav 8115_DOPP_11989_1990, 2015-04-02,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 0.9458, 0.9988, 15, 0