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Table 4

Single-clump and total gas masses.

Cl. C18O(1−0) C18O(2−1) H2CO(21,2 − 11,1)
(M) (M) (M)

A 130 160 170
B 320 310 330
C 270 270 350
D 570 400 300
E 210 240 300
F 70 50 140
G 130 90 60
H 180 170 250
I 20 30 60
L 20 40 ...
M  <10 ... ...
N 20 ... 20
O ... 50 90
P ... ... 90

Total 1950 1810 2090

Notes. The mass is computed integrating the column density within the 3σ contour in for each clump. The transition from which we derived the mass is indicated in the top row. If the clump is divided into sub-clumps (indicated by numbers; cf. Fig. 5) the mass reported is the sum of all the sub-components.

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