Fig. 6
Column density distribution function of the cloud sample using logarithmic binning. The vertical dotted lines mark the 5σ column density detection limit of the data (GASS: 
; EBHIS: 
for Gaussian-like emission of 20 km s-1 line width), leading to an incompleteness of the sample. The regime NH i ≥ 1019 cm-2 can be described by a power law with a slope of −2.1 ± 0.2.
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