Number of dwarfs in the BUD sample as a function of spectral type. The entire spectroscopic sample is shown (black solid line) in addition to the number of dwarfs with good photometry (as defined by the flag and uncertainty cuts described in Section 3) in each of the SDSS, 2MASS, and WISE bands (detailed in legend). The top panel shows the i, z, J, and H bands while the bottom panel shows the K_S, ﹩W1﹩, ﹩W2﹩ and ﹩W3﹩ bands; the bands are separated only for clarity. There are only five ultracool dwarfs with good ﹩W4﹩ photometry, so they are not included in the figure.