Time-resolved spectroscopy using the double-blackbody model (red dot) and the disk reflection model (blue square) for bursts #2 (left column), #8 (middle column), and #15 (right column), respectively. Shown in each column, from top to bottom, are the burst bolometric flux, F_burst; the hotter blackbody temperature, kT_bb1, the hotter blackbody radii, R_bb1, which were calculated using a distance of 8.4 kpc; the cold blackbody temperature, kT_bb2; the cold blackbody flux and disk reflection flux, F_bb2 and F_refl, respectively; and the goodness of fit per degree of freedom, . The red dash-dotted lines represent the persistent emission level.