Table 3: Thermodynamical parameters of the water-rich and water-poor subnebulae.
Thermodynamical Water-rich Water-poor

parameters subnebula subnebula

Mean mol. weight (g/mole) 18 3.1

$\alpha$ 10^-5 10^-4

Disk's radius $R_{\rm D}$ ( $R_{\rm Ur}$ ) 75 500

Initial disk's mass $M_{\rm D0}$ ( $M_{\rm Ur}$ ) 0.02

$\dot{M}_0$ ( $M_{\rm Ur}$ /yr) $4\times 10^{-5}$

Characteristic time scale (yr) 390 660

**Table 3:** Thermodynamical parameters of the water-rich and water-poor subnebulae.
Thermodynamical	Water-rich	Water-poor
parameters	subnebula	subnebula
Mean mol. weight (g/mole)	18	3.1
$\alpha$	10^-5	10^-4
Disk's radius $R_{\rm D}$ ( $R_{\rm Ur}$ )	75	500
Initial disk's mass $M_{\rm D0}$ ( $M_{\rm Ur}$ )	0.02
$\dot{M}_0$ ( $M_{\rm Ur}$ /yr)	$4\times 10^{-5}$
Characteristic time scale (yr)	390	660

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