############################################################
#                   Description of Files
############################################################


# Angle-Averaged Data in the HDF5 Format:
# =======================================

    <MODEL>_angle_average_<TIME>.h5

    The angle-averaged 3D data is stored in the HDF5 format
    (www.support.hdfgroup.org/HDF5). The files are named
    according to their model name (<MODEL>) and output time
    (<TIME>). The data is organized as follows:


## Grid-related datasets:
## ----------------------

    radius     -> radial grid (contains the         [cm]
                  radial coordinates of the cell
                  interfaces including the inner
                  and outer boundaries)
    m_enclosed -> enclosed (baryonic) mass          [solarmass]
                  evaluated at the cell outer
                  radius; including the mass
                  inside the inner boundary of
                  the computational grid


## Hydrodynamical data:
## --------------------

    The hydrodynamical data are defined at the cell centers.
    The following quantities are angle averages of the
    corresponding 3D (Yin-Yang) data (i.e., computed according
    to q(r) = \int q(r,theta,phi) dOmega / \int dOmega, taking
    into account the Yin-Yang surface weights, which are < 1
    in the overlap regions of the two grid patches):

    den  -> density                                 [g/cm^3]
    pre  -> pressure                                [erg/cm^3]
    sto  -> entropy per baryon                      [kboltzmann]
    tem  -> temperature                             [K]
    vr   -> velocity in radial direction            [cm/s]

    The following quantities are mass averages (i.e., density-
    weighted angle averages) of the corresponding 3DYY data
    (i.e., q(r) = \int q(r,theta,phi) * den(r,theta,phi) dOmega
    / \int den(r,t,p) dOmega, taking into account the Yin-Yang
    surface weights, which are < 1 in the overlap regions of
    the two grid patches):

    eint -> specific internal energy                [erg/g]
    ekin -> specific kinetic energy                 [erg/g]
            (Note that ekin also contains non-
            radial contributions from the under-
            lying 3D model.)
    X_i  -> mass fraction of nuclear species i      [1]
            (i = n, p, He4, ..., Fe56, Tr)
    Y_e  -> electron fraction                       [1]

# Note: The units and descriptions of the quantities are also
#       stored in the metadata ('attrs') of the HDF5 datasets.