benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 m415, 2001-09-08,  JMS ,   ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.3913, 1.4388, 30, 16430
 m415, 2001-09-14,  WRT ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.5002, 1.5468, 30, 16930
 m415 M415_1945_USCGS, 2005-09-12,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.3168, 1.3649, 30, 16130
 m415 M415_1945_USCGS, 2005-09-16,  WRT ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.342, 1.3899, 30, 1740
 m415 M415_1945_USCGS, 2010-09-20,  SAH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.3753, 1.4229, 15, 16915