Table 2: The sample of comparison stars.

IRAS name	Other names	Galactic Coordinates		Variability	Spectral Type	[12]-[25]	[25]-[60]
00213+3817	R And	117.07	-23.98	Mira	S5/4.5e	-0.723	-2.104
02192+5821	S Per	134.62	-2.19	SRc	M4eIa	-0.407	-1.897
10436-3459	Z Ant	275.86	+20.94	SR	S5.4	-0.830	-2.172
18397+1738	V821 Her	47.78	+10.01	Mira	Ce	-0.873	-1.499
19133-1703	T Sgr	20.32	-13.01	Mira	S5/6e	-1.125	-1.372
20166+3717	WX Cyg	75.43	+0.87	Mira	C9,2eJ	-1.191	+1.445
23416+6130	PZ Cas	115.06	-0.05	SRc	M3vIa	+0.070	-1.538
23554+5612	WY Cas	115.57	-5.62	Mira	S6/6e	-0.633	-1.286
23587+6004	WZ Cas	116.76	-1.91	SRc	SC7/10e	-1.280	-1.348