Table 1: Clustering measures and numbers for the observed star-forming regions for prestellar cores (p), Class 1, 2, 3 sources, and all YSOs. (Note that the total number of YSOs is larger than the sum of objects in the individual classes, because it contains Class 0 sources and objects with unclear classification not considered in the analysis of the individual classes.) For details see the discussion in Sect. 6.1.
Region Class n s ['] s [pc] m ['] m [pc] $\bar{s}$ $\bar{m}$ Q $\bar{s}^*$ $\bar{m}^*$ Q^* $\xi$

$\rho$ Ophiuchi p 98 20.45 0.83 2.71 0.11 0.67 0.55 0.82 0.49 0.40 0.81 1.36

1 15 11.82 0.48 3.15 0.13 1.13 0.68 0.60 0.77 0.43 0.56 1.47

2 111 15.86 0.65 2.25 0.09 0.69 0.58 0.83 0.54 0.63 1.15 1.27

3 77 16.25 0.66 2.53 0.10 0.82 0.63 0.76 0.70 0.66 0.93 1.17

all 205 15.63 0.64 1.67 0.07 0.67 0.57 0.85 0.53 0.45 0.85 1.28

Serpens 1 19 3.43 0.26 1.12 0.09 0.99 0.82 0.83 0.27 0.22 0.79 3.61

2 18 7.85 0.59 1.74 0.13 0.74 0.61 0.82 0.52 0.42 0.80 1.42

all 80 5.98 0.45 1.06 0.08 0.60 0.54 0.90 0.37 0.32 0.89 1.63

Taurus p 52 281.0 11.47 45.88 1.87 0.77 0.48 0.62 0.59 0.36 0.61 1.29

1 25 265.6 10.84 73.18 2.98 0.83 0.60 0.73 0.59 0.41 0.70 1.39

2 108 333.5 13.62 34.30 1.40 0.69 0.41 0.59 0.43 0.54 1.26 1.61

3 72 414.4 16.96 52.99 2.16 0.84 0.51 0.60 0.77 0.63 0.82 1.09

all 197 356.8 14.58 25.98 1.06 0.67 0.39 0.58 0.46 0.27 0.58 1.45

IC 348 all 288 6.86 0.63 0.66 0.06 0.56 0.52 0.93 0.49 0.45 0.92 1.16

Chamaeleon I all 180 41.51 1.81 3.74 0.16 0.55 0.37 0.68 0.50 0.34 0.68 1.32

**Table 1:** Clustering measures and numbers for the observed star-forming regions for prestellar cores (p), Class 1, 2, 3 sources, and all YSOs. (Note that the total number of YSOs is larger than the sum of objects in the individual classes, because it contains Class 0 sources and objects with unclear classification not considered in the analysis of the individual classes.) For details see the discussion in Sect. 6.1.
Region	Class	n	s [']	s [pc]	m [']	m [pc]	$\bar{s}$	$\bar{m}$	Q	$\bar{s}^*$	$\bar{m}^*$	Q^*	$\xi$
$\rho$ Ophiuchi	p	98	20.45	0.83	2.71	0.11	0.67	0.55	0.82	0.49	0.40	0.81	1.36
	1	15	11.82	0.48	3.15	0.13	1.13	0.68	0.60	0.77	0.43	0.56	1.47
	2	111	15.86	0.65	2.25	0.09	0.69	0.58	0.83	0.54	0.63	1.15	1.27
	3	77	16.25	0.66	2.53	0.10	0.82	0.63	0.76	0.70	0.66	0.93	1.17
	all	205	15.63	0.64	1.67	0.07	0.67	0.57	0.85	0.53	0.45	0.85	1.28
Serpens	1	19	3.43	0.26	1.12	0.09	0.99	0.82	0.83	0.27	0.22	0.79	3.61
	2	18	7.85	0.59	1.74	0.13	0.74	0.61	0.82	0.52	0.42	0.80	1.42
	all	80	5.98	0.45	1.06	0.08	0.60	0.54	0.90	0.37	0.32	0.89	1.63
Taurus	p	52	281.0	11.47	45.88	1.87	0.77	0.48	0.62	0.59	0.36	0.61	1.29
	1	25	265.6	10.84	73.18	2.98	0.83	0.60	0.73	0.59	0.41	0.70	1.39
	2	108	333.5	13.62	34.30	1.40	0.69	0.41	0.59	0.43	0.54	1.26	1.61
	3	72	414.4	16.96	52.99	2.16	0.84	0.51	0.60	0.77	0.63	0.82	1.09
	all	197	356.8	14.58	25.98	1.06	0.67	0.39	0.58	0.46	0.27	0.58	1.45
IC 348	all	288	6.86	0.63	0.66	0.06	0.56	0.52	0.93	0.49	0.45	0.92	1.16
Chamaeleon I	all	180	41.51	1.81	3.74	0.16	0.55	0.37	0.68	0.50	0.34	0.68	1.32

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