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Table 2

Upper limits of the undetected sources.

IRAS name CO 13CO
1 → 0 2 → 1 1 → 0 2 → 1

16552-3050 0.83 0.64 0.36
18113-2503 1.08 2.15 0.25 0.27
19134+2131 0.61 0.72 0.53 1.61

Notes. Three-sigma rms limits in K  km s-1. Velocity width of 40 km s-1 assumed.

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