Comparison between the GBT and NRAO GBES (Langston et al. 2000) data. Top left: NRAO GBES 2 cm map (top right) GBT 2 cm map of the same region smoothed to about 8.9′. The colorbar applies to both figures, showing brightness temperature units in K. The red contours in both figures show the region observed by Green Bank; flux outside of those boundaries is extrapolated with the smoothing kernel. The green contours show the region where T_B(GBT) >T_B(GBES). Bottom: plot of the GBT vs. the GBES surface brightness measurements. The large red dots show the region within the red contours.