benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mari, 2001-09-23,  WRT ,   ,  ASHTECH,  LP00108.707 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992801,  NONE, 1.2904, 1.3388, 30, 15260
 mari, 2001-09-24,  WRT ,   ,  ASHTECH,  LP00108.707 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992801,  NONE, 1.2904, 1.3388, 30, 0
 mari Mari_USGS_NEHRP, 2005-09-26,  WRT ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.1803, 1.2299, 30, 30
 mari Mari_USGS_NEHRP, 2012-09-13,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 183515
 mari Mari_USGS_NEHRP, 2012-09-14,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 0
 mari Mari_USGS_NEHRP, 2012-09-15,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 0
 mari Mari_USGS_NEHRP, 2012-09-17,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 161945
 mari Mari_USGS_NEHRP, 2012-09-18,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 0
 mari Mari_USGS_NEHRP, 2012-09-19,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 0
 mari Mari_USGS_NEHRP, 2012-09-20,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 0.81, 0.8659, 15, 0