Nineteen NPS pointings: the (0.75–1.3)/(0.4–0.75) keV hardness ratios (left), IRAS 100μ data (middle) and 0.3–1.4 keV brightnesses (right). The color scale applies to the three quantities: from 0 to 4 for the hardness ratio, from 0 to 65 M Jsr-1 for IRAS, and from 0 to 6 cts s-1 deg-2 for the 0.3–1.4 keV brightness.
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