Table 1: Parameters of 3 clouds of the southern part of TMR, TMR hole, and TMR (see Fig. 3) Notes: TMR and the TMR hole are approximately two times larger than the part seen in our ISOPHOT image. The $\Delta I_{100}$ and $\Delta I_{200}$ excess surface brightness values are relative to the TMR hole. The FIR colour temperature of the TMR hole was calculated from the absolute surface brightness values.
Region RA(2000) Dec(2000) I60,  I100,  I200 $\Delta I_{100}$, $\Delta I_{200}$ $T_{\rm d}$ $d_{{\rm eff}}$ a/b $\Delta v$ N(H2) M
      MJy sr-1 MJy sr-1 K pc   km s-1 1021 cm-2 $M_{\odot}$
TMC-1 CP 4$^{\rm h}$41$^{\rm h}$35$^{\rm s}$ +25$^\circ $38$^\prime $53 $^{\prime \prime }$ 3.0,   30.1,   193 5.0,   88 11.4 $\pm$ 1.3 0.27 2.0 0.8 18 26.8

HCL 2-E		 4   41   01 +25  30  32 3.4,   32.4,   176 7.2,   71 12.6 $\pm$ 1.3 0.22 2.2 1.0 11 15.0

HCL 2-ES		 4   40   33 +25  30  25 3.2,   32.5,   173 7.5,   68 12.7$\pm 1.3$ 0.18 2.5 0.5 11 7.4

TMR hole		 4   40   41 +25  43  21 3.0,   25.2,   105 -,    - 14.8 $\pm$ 1.0 0.24 - 0.9 4.5 -

TMR south		 4   40   41 +25  30  00 3.4,   30.7,   159 5.6,   54 12.6 $\pm$ 1.5 1.2 - 0.8 11 245


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