S&P数据（摘录）

S&P 500 1%+ Drops to Start October
Date	% Chg	Rest of Oct (%)	Rest of Year (%)	Next Year (%)	Pos in Current Trend	Pos in Shiller PE Ratio	Critical High	Critical Low	L/H (%)	H/L (%)
10/1/1931	(1.85)	9.44	(14.80)	(12.00)	5th Bot of 7 Down-Waves	before Major Bottom	1929-09: 31.92	1932-07: 4.43	(86.12)
10/2/1933	(1.03)	(6.86)	3.64	(18.50)	2nd Bot of 6 Up-Waves	1st Cor. after Major Bottom	1937-03: 18.68	1942-04: 7.55	(59.58)	321.67
10/1/1934	(2.75)	(0.23)	7.59	57.14	3rd Bot of 6 Up-Waves	1st Cor. after Major Bottom	1946-05: 19.18	1949-06: 13.81	(28.00)	154.04
10/3/1955	(2.70)	(0.35)	7.04	(0.02)	Major Cor. at Top of Long Up	1st Cor. after Major Bottom	1956-07: 49.64	1957-12: 39.48	(20.47)	259.45
10/1/1956	(1.43)	1.97	4.41	(6.75)	Major Cor. at Top of Long Up	before Major Cor.	1961-12: 72.01	1962-06: 52.68	(26.84)	82.40
10/1/1962	(1.39)	1.86	13.71	16.37	1nd Bot of Up-Waves	last Cor. before Major Top	1966-02: 93.81	1966-10: 73.20	(21.97)	78.08
10/3/1966	(2.17)	7.08	7.25	6.50	Major Cor. In Mid of Long Up	after Major Top	1968-11: 108.37	1970-05: 72.25	(33.33)	48.05
10/1/1975	(1.12)	7.37	8.75	1.16	1st Bot of Long Up	last Cor. before Major Bottom	1973-01: 120.71	1974-09: 62.34	(48.36)	67.07
10/1/1976	(1.02)	(1.22)	3.16	(12.53)	2nd Bot of Long Up	last Cor. before Major Bottom	1980-11: 140.52	1982-08: 103.71	(26.20)	125.41
10/1/1998	(3.01)	11.38	24.62	13.05	Major Cor. before Top of Long Up	before Major Top	1987-08: 335.90	1987-11: 223.92	(33.34)	223.88
10/1/2009	(2.56)	0.62	8.28	11.05	1st Bot of Long Up	after Major Bottom	2000-03: 1527.46	2002-09: 800.58	(47.59)	582.15
10/3/2011	(2.85)	14.02	14.41	15.20	2nd Bot of Long Up	1st Cor. after Major Bottom	2007-10: 1561.8	2009-03: 683.38	(56.24)	95.08
10/1/2014	(1.32)	3.69	5.79	(6.00)	Mid Cor. In Long Up	last Cor. before Major Top	2019-07: 3025.86		#VALUE!	342.78
10/1/2019	(1.19)					after Major Top

[dasan]

L/H (%) =100*(RIGHT(I3, LEN(I3)-9)/RIGHT(H3, LEN(H3)-9) - 1)
H/L (%) =100*(RIGHT(H4, LEN(H4)-9)/RIGHT(I3, LEN(I3)-9) - 1)