Spectra of the computed accretion heated atmospheres (top panel) and the corresponding temperature structures. The grid models with the relative accretion luminosities L_a/L_Edd = 0.1,0.2,0.3, and 0.4 are shown with blue curves. The best fit model spectra and temperature structure are shown with red curves. The best fit diluted blackbody spectrum in the NS surface frame ( = 1.545 keV) is also shown with a dashed curve.