These data are associated with the paper: "Vapor Pressures of Low-
Temperature C2Hx Hydrocarbon Ices" (in press in Icarus).

Authors: W.M. Grundy, S.P. Tan, J.K. Steckloff, A.S. Smith, T.M.
Lucas, G.E. Lindberg, M.D. Brand, S.C. Tegler, C.L. Thieberger,
I.E. Knudsen, and J. Hanley

The following files with names starting with "data" contain time-series
data from sublimation experiments on three species: C2H2, C2H4,
and C2H6.  There are 3 types of data.  Files with names containing
"P_mass_spec_torr" contain partial pressures in Torr for the mass of
the molecule being studied (26 Da for C2H2, 28 Da for C2H4, and 30 Da
for C2H6).  Files with names containing "QCM_freq_Hz" contain quartz
crystal microbalance frequencies in Hz.  Files with names containing "T_K"
contain temperature in K corrected as described in Grundy et al. (2024)
(Icarus 410, 115767).  The data format is time in hours in the first
column followed by the quantity described in the file name and also in
the column heading.  Each file has distinct sections for deposition and
sublimation (sometimes more than one of each) as indicated by text labels.

    data_C2H2_experiment1_P_mass_spec.txt
    data_C2H2_experiment1_QCM_freq_Hz.txt
    data_C2H2_experiment1_T_K.txt
    data_C2H2_experiment2_P_mass_spec.txt
    data_C2H2_experiment2_QCM_freq_Hz.txt
    data_C2H2_experiment2_T_K.txt
    data_C2H2_experiment3_P_mass_spec.txt
    data_C2H2_experiment3_QCM_freq_Hz.txt
    data_C2H2_experiment3_T_K.txt
    data_C2H4_experiment1_P_mass_spec.txt
    data_C2H4_experiment1_QCM_freq_Hz.txt
    data_C2H4_experiment1_T_K.txt
    data_C2H4_experiment2_P_mass_spec.txt
    data_C2H4_experiment2_QCM_freq_Hz.txt
    data_C2H4_experiment2_T_K.txt
    data_C2H6_experiment1_P_mass_spec.txt
    data_C2H6_experiment1_QCM_freq_Hz.txt
    data_C2H6_experiment1_T_K.txt
    data_C2H6_experiment2_P_mass_spec.txt
    data_C2H6_experiment2_QCM_freq_Hz.txt
    data_C2H6_experiment2_T_K.txt

The following files with names starting with "fig" contain numerical
data plotted in the corresponding figures in the paper.

    fig01_C2H2_Fray+Schmitt.txt - polynomial from Fray & Schmitt (2009)
    fig01_C2H2_new_polynomial.txt - our fit using the Fray & Schmitt
        polynomial, using parameters in Table 2
    fig01_C2H2_Tickner+Lossing.txt - data from Tickner & Lossing (1951)
    fig01_C2H2.txt - our measured temperatures and vapor pressures for C2H2
    fig01_C2H4_Fray+Schmitt.txt - polynomial from Fray & Schmitt (2009)
    fig01_C2H4_Liang.txt - single data point from Liang (1952)
    fig01_C2H4_new_polynomial.txt - our fit using the Lobo & Ferreira
        (2001) expression, using parameters in Table 2
    fig01_C2H4_Tickner+Lossing.txt - data from Tickner & Lossing (1951)
    fig01_C2H4.txt - our measured temperatures and vapor pressures for C2H4
    fig01_C2H6_Fray+Schmitt.txt - polynomial from Fray & Schmitt (2009)
    fig01_C2H6_new_polynomial.txt - our fit using the Lobo & Ferreira
        (2001) expression, using parameters in Table 2
    fig01_C2H6_Regnier.txt - data from Regnier (1972)
    fig01_C2H6.txt - our measured temperatures and vapor pressures for C2H6
    fig02_latent_heats.txt - first column is temperature (K), 2nd column
        is latent heat of sublimation (kJ/mol)