benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 lava Lava_Az_Mk_1972, 1993-07-13,  JMS ,  USGS ,  ASHTECH LM-XII3,  107,  7A26,  ASH700228D,  *031,  NONE, 1.1869, 1.2364, 30, 232230
 lava Lava_Az_Mk_1972, 1992-08-16,  BDK ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.1296, 1.1798, 30, 185030
 lava Lava_Az_Mk_1972, 1994-07-29,  JMS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.2212, 1.2703, 30, 14150