Appendix A. NGA Data Products The following downloadable data products are made available in the NGA website. They include FITS files and ds9 PNG figures. They can be used for further analyses and directly compared with other wavelength data. The spectral maps (24 or 28) per (4) binning method per (6 or 7) spectral parameter are stored in two subfolders, one for fixed Fe and another for variable Fe. ${gmv}_evt.fits.gz - a merged event file which combined-s all ObsIDs and both MOS1 and MOS2. ${gmv} indicate galaxy name, merge id (mid) and version. $gmv looks like N4636_90101_v01. ${gmv}_${e}_img.fits - a combined image file. ${e} is the energy band used, G 0.5-2.0 keV and C 0.5-5 keV. ${gmv}_${e}_exp.fits - a combined exposure map. ${gmv}_${e}_diff_img.fits - a diffuse image file after removing detected point sources and filling with the photons from the surrounding area. ${gmv}_${e}_sm_diff_flux.fits - a exposure-corrected, smoothed, diffuse image file. ${gmv}_${e}_sm_diff_flux.png - same, but a ds9 png file ${gmv}_src_psfsize.fits - a FITS list of detected sources ${gmv}_OX.png - a png file with an optical DSS image and a raw x-ray image side-by-side. ${gmv}_rgb.png - a false (three) color image. The energy bands used in rgb are 0.5-1.2, 1.2-2, and 2-7 keV, respectively. ${gm}_${xB}_${Smap}.fits - a FITS image per each binning method and per each spectral parameter. xB indicates a binning method (AB, WB, CB, or HB). Smap indicates a spectral map (Imap for intensity, Tmap for temperature, Cmap for Chi^2, N for normalization/area or EM, P for pressure, K for entropy, or Fe for Fe abundance). ${gm}_${xB}_${Smap}.png - the same, but a ds9 png file. ${gm}_${xB}_sum_rad.dat - an ASCII table containing (1) bin number, (2) galacto-centric distance in arcmin determined by photon weighted mean distance from the galaxy center, (3) area of the bin in pixel (one pixel is 2" x 2") (4-5) total and net counts, (6) reduced chi^2, (7-9) best-fit T and its 1-sigma lower and upper bounds, (10) T error in percent, (11-13) APEC normalization parameter divided by bin area and its 1-sigma lower and upper bounds (14-16) best-fit Fe abundance and its 1-sigma lower and upper bounds. ${gm}_${xB}_binno.fits a FITS image file with pixel value = bin number