benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ppin, 2004-07-13,  MLDWSK ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  12560646,  NONE, 0.57, 0.6374, 30, 30
 ppin, 2004-07-14,  MLDWSK ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  12560646,  NONE, 0.57, 0.6374, 30, 30