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Table 2

Submillimeter observations.

Name UT date λ (μm) Exp. time τ225GHz range Secondary calibrators Flux calibrators

HIP 51658 2012 02 16 450 6 × 10 min 0.04–0.06 3C 273, OH 231.8, OJ 287 CRL 618, OH 231.8
HIP 68160 2012 02 16 450 5 × 10 min 0.03–0.06 3C 273, OJ 287 CRL 618, OH 231.8
HIP 73165 2012 06 10 350 5 × 10 min 0.06–0.07 Arp 220 Neptune, Uranus
HIP 73512 2012 06 10 450 6 × 10 min 0.06–0.07 Arp 220 Arp 220, Mars
HIP 76375 2012 06 10 350 8 × 5 min 0.05–0.06 Arp 220 Neptune, Uranus
HIP 112460 2012 06 13 350 8 × 10 min 0.06–0.07 Arp 220 Neptune, Uranus

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