benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 k238, 2001-09-13,  JMS ,   ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.5435, 1.5898, 30, 15410
 k238, 2001-09-21,  CWW ,   ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH701945B_M,  CR519992603,  NONE, 1.3934, 1.4409, 30, 15140
 k238 K238_1944_USCGS, 2005-09-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 0.5553, 0.6199, 30, 151830
 k238 K238_1944_USCGS, 2005-09-21,  GDH ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR619992801,  NONE, 1.3561, 1.4039, 30, 15420
 k238 K238_1944_USCGS, 2010-08-11,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7843, 0.8408, 15, 0
 k238 K238_1944_USCGS, 2010-08-12,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7843, 0.8408, 15, 0