Examples of brightness temperature maps of Venus, derived from the continuum maps recorded during each of the TEXES observing runs at a frequency of 529.28 cm^-1 (18.9 μm). The exact dates and durations of the maps are indicated in Table 2. The scale is the same for all six maps. A brightness temperature of 235 K corresponds to a radiance of 71.9 erg/s/cm²/sr/cm^-1 at 530 cm^-1. No data were acquired at 19 μm in January 2012.