Table 3: Power law indices of the mass spectrum of the clumps, d $N/{\rm d}M \propto M^{-\alpha }$, for different mass ranges. The mass of the clumps has been derived either from the dust continuum or from gas emission. The arrows indicate the whole mass range for which the fit to the mass spectrum has been done.
  Mass range $(M_\odot)$
  1.7-25 10-35 35-100 100-103 103-104
Dust emission          
Tothill et al. (2002) -- 1.7 -- -- --
Beuther & Schilke (2004) 2.5 -- -- -- --
Williams et al. (2004) -- 1.14 2.32
This paper -- 1.5-1.9 2.1
Reid & Wilson (2005) --  0.9 2.0
Gas emission          
Kramer et al. (1998) -- 1.6-1.7 1.6-1.8 1.7-1.8 1.7-1.8


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