Table 1: The sample of objects of the SiO monitoring presented in this paper and the time sampling achieved for each of them.
coordinates v=1;2

Name (type¹) RA Dec Av. sampling (days) Num. spectra Figures

(1950) (1950) v1;v2 v1;v2

o Cet (M) 02 16 49.0 -03 12 13 29;41 125;86 5, 8

IK Tau (M) 03 50 43.6 +11 15 32 30;39 116;87 5, 10

TX Cam (M) 04 56 43.0 +56 06 48 31;45 121;66 20^*

R Cnc (M) 08 13 48.6 +11 52 52 38;46 60;49 19^*

X Hya (M) 09 33 06.7 -14 28 05 39;45 61;48

R LMi (M) 09 42 35.0 +34 44 34 31;40 119;86 16^*

R Leo (M) 09 44 52.2 +11 39 40 32;39 118;87 5, 14^*

W Hya (M) 13 46 12.0 -28 07 06 30;38 121;87 18^*

U Her (M) 16 23 35.0 +19 00 18 32;38 117;87 21^*

R Aql (M) 19 03 57.7 +08 09 08 38;37 61;49 17^*

$\chi$ Cyg (M) 19 48 38.4 +32 47 10 36;50 62;45

R Aqr (M) 23 41 14.0 -15 33 42 32;39 118;85 5, 11^*

R Cas (M) 23 55 52.0 +51 06 37 30;41 123;67 5, 15^*

IRC+10011 (OH/IR) 01 03 48.0 +12 19 51 33;49 79;59 12^*

OH 26.5+0.6 (OH/IR) 18 34 52.5 -05 26 37 40;47 58;48 13^*

RT Vir (SR) 13 00 05.8 +05 27 14 31;41 108;64

GY Aql (SR²) 19 47 25.0 -07 44 30 31;42 119;86 5, 9

VY CMa (SG) 07 20 55.0 -25 40 12 32;42 115;83 2^*

VX Sgr (SG) 18 05 03.0 -22 13 55 31;41 117;63 3^*

$\mu$ Cep (SG) 21 41 58.5 +58 33 01 34;42 78;61 4^*

Orion IRc2 (SFR) 05 32 47.0 -05 24 23 30;41 122;92 1^*

$\textstyle \parbox{13.5cm}{ Notes.- $^{1}$\space SG: Supergiant, SR: Semiregula... ...t a Mira-type behavior. \\ $^{*}$\space These figures available only online.}$

**Table 1:** The sample of objects of the SiO monitoring presented in this paper and the time sampling achieved for each of them.
	coordinates	v=1;2
Name (type¹)	RA	Dec	Av. sampling (days)	Num. spectra	Figures
	(1950)	(1950)	v1;v2	v1;v2
o Cet (M)	02 16 49.0	-03 12 13	29;41	125;86	5, 8
IK Tau (M)	03 50 43.6	+11 15 32	30;39	116;87	5, 10
TX Cam (M)	04 56 43.0	+56 06 48	31;45	121;66	20^*
R Cnc (M)	08 13 48.6	+11 52 52	38;46	60;49	19^*
X Hya (M)	09 33 06.7	-14 28 05	39;45	61;48
R LMi (M)	09 42 35.0	+34 44 34	31;40	119;86	16^*
R Leo (M)	09 44 52.2	+11 39 40	32;39	118;87	5, 14^*
W Hya (M)	13 46 12.0	-28 07 06	30;38	121;87	18^*
U Her (M)	16 23 35.0	+19 00 18	32;38	117;87	21^*
R Aql (M)	19 03 57.7	+08 09 08	38;37	61;49	17^*
$\chi$ Cyg (M)	19 48 38.4	+32 47 10	36;50	62;45
R Aqr (M)	23 41 14.0	-15 33 42	32;39	118;85	5, 11^*
R Cas (M)	23 55 52.0	+51 06 37	30;41	123;67	5, 15^*
IRC+10011 (OH/IR)	01 03 48.0	+12 19 51	33;49	79;59	12^*
OH 26.5+0.6 (OH/IR)	18 34 52.5	-05 26 37	40;47	58;48	13^*
RT Vir (SR)	13 00 05.8	+05 27 14	31;41	108;64
GY Aql (SR²)	19 47 25.0	-07 44 30	31;42	119;86	5, 9
VY CMa (SG)	07 20 55.0	-25 40 12	32;42	115;83	2^*
VX Sgr (SG)	18 05 03.0	-22 13 55	31;41	117;63	3^*
$\mu$ Cep (SG)	21 41 58.5	+58 33 01	34;42	78;61	4^*
Orion IRc2 (SFR)	05 32 47.0	-05 24 23	30;41	122;92	1^*

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