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Table 4

Sources showing excess in our analysis – discussion in text.

Name  [3.4]  –  [12]   [3.4]  –  [22]   [12]  –  [22]  Comment

GJ 570 B/C 5.27 6.05 1.73 Contamination from nearby K4 primary
SCR 1845-6357 A 4.84 1.92 0.87 T6 brown dwarf companion in beam
LHS 288 1.34 3.78 3.49 22 μm measurement strongly inconsistent with Spitzer measurement
GJ 860 A/B 2.41 3.21 2.35 Apparent excess caused by binarity

Notes. The four sources identified as excess sources from our σ′ > 3 test with their corresponding σ′ values for the three colors we constructed. Statistically significant excesses are marked in bold. The comment gives possible reasons why the detected excess could be spurious or not originate from a debris disk. The sources are discussed individually in the text.

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