Two ambient modes: gas/aerosol partitioning; and 3 gases (alkyl nitrates, peroxy nitrates, and NO2) are kept in separate files, since the measured quantities are different.  Contact Julie (fry@reed.edu) with any questions!

RA: original field dataset
RB: added 1/4/13: cleaned up times around zeroes.  This is the version used in our ACPD paper on ambient organic nitrate measurements at BEACHON-RoMBAS.