Distribution of our LAMOST DR6 hot-star candidates in the Gaia G-band magnitude and LAMOST spectral S/N plane. The G-band magnitudes cover a dynamic range of nearly 15 magnitudes, and most of them are between G ~ 10 and 18 mag. The spectral S/N peaks at around 63 (log(S /N) ~ 1.8) but has a median value of 37 due to a significant low-S/N tail. The isodensity contours encompass 68.3, 95, and 99.7% of the sample stars, respectively, and the colors delineate the relative stellar number density, with darker colors representing higher density.