Table 1. PC scores with Top 20 PC1 score.

Sake_1					Sake_2
No.	m/z	# Spectra	PC1	PC2	No.	m/z	# Spectra	PC1	PC2
1	752–753	1400–1450	291.1	-14.6	1	455–456	1250–1300	390.2	60.7
2	455–456	1250–1300	260.4	62.8	2	754–755	1350–1400	247.3	14.7
3	751–752	1400–1450	241.6	-11.2	3	752–753	1400–1450	183.2	-11.6
4	273–274	1350–1400	201.2	40.9	4	391–392	2600–2650	176.7	-42.4
5	376–377	1200–1250	195.8	-31.7	5	751–752	1400–1450	152.1	-9.4
6	754–755	1350–1400	182.7	35.5	6	273–274	1350–1400	115.0	-0.2
7	391–392	2600–2650	133.3	-66.1	7	456–457	1250–1300	106.8	17.0
8	307–308	1400–1450	102.1	46.1	8	568–569	1400–1450	105.1	15.0
9	803–804	2600–2650	91.4	-40.6	9	376–377	1200–1250	101.6	-32.7
10	568–569	1400–1450	83.4	34.5	10	391–392	2550–2600	94.8	-140.2
11	688–689	1400–1450	79.9	0.0	11	832–833	1200–1250	87.2	33.7
12	456–457	1250–1300	70.4	17.4	12	803–804	2600–2650	85.6	-19.5
13	404–405	1450–1500	63.6	17.9	13	662–663	1350–1400	81.4	-21.9
14	391–392	2650–2700	54.5	-13.2	14	483–484	1550–1600	71.4	30.4
15	755–756	1350–1400	53.4	10.5	15	307–308	1400–1450	70.2	22.4
16	605–606	1000–1050	52.8	-16.8	16	755–756	1350–1400	69.8	2.8
17	358–359	1200–1250	51.4	15.4	17	358–359	1200–1250	62.0	15.9
18	662–663	1350–1400	48.7	4.2	18	830–831	1250–1300	61.7	23.6
19	216–217	1950–2000	48.2	8.9	19	338–339	2700–2750	51.3	-13.2
20	804–805	2600–2650	47.6	-20.9	20	391–392	2650–2700	48.6	5.0

Components with underlined bold characters indicate common factors shared between the two batches of sake