Table 1 
Stellar Groups


Group	Mean Distance	Age	Disk Fraction	References	Initial	Disk-bearing	Accretors	Age	
	(pc)	(Myr)	(%)		Sample	Stars	Sample	Bin	
ONC	400	1-3	73 +or- 5.9	(4), (7), (4)	508	305	228	1	
Taurus	130-200	1-2	63.7 +or- 5.1	(8), (9), *	137	87	16	1	
IC 348	320	2-3	47 +or- 12	(10), (1), (1)	163	59	cdots	2	
sigma Ori	400	3	36 +or- 4	(11), (2), (2)	185	73	40	2	
lambda Ori	400	4-6	18.5 +or- 4	(12), (3), (3)	142	24	cdots	3	
Ori OB1b	400	5	13-17	(4), (6), (4)	278	45	59	3	
Upper Sco.	146	5-11	25 +or- 0.02	(13), (14), (9)	59	19	cdots	3	
gamma Vel	345	7.5	5-7	(15), (16), (5)	125	14	cdots	4	
Ori OB1a	350-360	9-14	6-10	(4), (4), (6)	189	13	77	4	
Note. Column 6 refers to the number of K0-M6 stars initially compiled (diskless and disk-bearing stars) with IRAC and PANSTARRS photometry in each stellar group. Column 7 refers to the number of stars with near-IR excess above the photosphere, separated according to Section 2.3, which correspond to the sample used to study the dust component of the disks. Column 8 refers to the CTTSs/CWTTSs sample, described in Section 2.6.1 used to study the evolution of $\dot{M}$.
References. (1) Lada et al. (2006), (2) Hernandez et al. (2007b), (3) Hernandez et al. (2010), (4) Briceno et al. (2019), (5) Hernandez et al. (2008), (6) Hernandez et al. (2007a), (7) Hillenbrand et al. (2013), (8) Galli et al. (2019), (9) Luhman & Mamajek (2012), (10) Ortiz-Leon et al. (2018), (11) Perez-Blanco et al. (2018), (12) Kounkel et al. (2018), (13) Galli et al. (2018), (14) David et al. (2019), (15) Franciosini et al. (2018), (16) Jeffries et al. (2017). *Using the data from Luhman et al. (2010) we estimate a disk fraction of 63.7 +or- 5.1 in Taurus.
