Table 2: The ratio of prestellar cores to the total number of YSOs at time $\tau$ for three models and the observations.
Region M2k4 M6k2a M10k2 Observations

$\rho$ Oph 0.30 0.10 0.10 0.47

Serpens 0.79 0.06 0.74 0.39

Taurus 0.32 0.09 0.22 0.25

Cha I 0.18 0.11 0.82 <0.39

**Table 2:** The ratio of prestellar cores to the total number of YSOs at time $\tau$ for three models and the observations.
Region	M2k4	M6k2a	M10k2	Observations
$\rho$ Oph	0.30	0.10	0.10	0.47
Serpens	0.79	0.06	0.74	0.39
Taurus	0.32	0.09	0.22	0.25
Cha I	0.18	0.11	0.82	<0.39

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observational data
	3 The models
	4 Discussion
	5 Summary and conclusions
	References