Mean Cal‐PSWDB colors for sources in the sample with ﹩\left|b\right|< 20^{\circ }﹩. Data are shown in brown, and error bars are suppressed. An ﹩A_{v}=1﹩ interstellar reddening vector is shown in red. Source density contours of 10%, 40%, 65%, and 80% of the maximum source density are shown in black. The box illustrates the PSC color selection criteria. The Cal‐PSWDB colors for many sources fall outside the PSC color selection criteria because of the larger errors in PSC photometry.