Six Sigma Table - Westgard

Six Sigma Table

A table presenting both short-term and long-term Sigma rates for various %Yield and Cp values.

DPM	Sigma Short Term	Sigma Long Term	Yield	Cp
3.4	6	4.5	99.99966	2

5	5.9	4.4	99.99954	1.97
9	5.8	4.3	99.99915	1.93
13	5.7	4.2	99.9987	1.9
21	5.6	4.1	99.9979	1.87
32	5.5	4	99.9968	1.83

48	5.4	3.9	99.995	1.8
72	5.3	3.9	99.993	1.77
108	5.2	3.7	99.989	1.73
159	5.1	3.6	99.984	1.7
233	5	3.5	99.98	1.67

337	4.9	3.4	99.97	1.63
483	4.8	3.3	99.95	1.6
687	4.7	3.2	99.93	1.57
968	4.6	3.1	99.90	1.53
1,350	4.5	3	99.87	1.5

1,866	4.4	2.9	99.81	1.47
2,555	4.3	2.8	99.74	1.43
3,467	4.2	2.7	99.65	1.4
4.661	4.1	2.6	99.5	1.37
6,210	4	2.5	99.4	1.33

8,198	3.9	2.4	99.2	1.3
10,724	3.8	2.3	98.9	1.27
13,903	3.7	2.2	98.6	1.23
17,864	3.6	2.1	98.2	1.2
22,750	3.5	2	97.7	1.17

28,716	3.4	1.9	97.1	1.13
35,930	3.3	1.8	96.4	1.1
44,565	3.2	1.7	95.5	1.07
54,799	3.1	1.6	94.5	1.03
66,807	3	1.5	93.3	1

80,757	2.9	1.4	91.9	0.97
96,801	2.8	1.3	90.3	0.93
115,070	2.7	1.2	88.5	0.9
135,666	2.6	1.1	86.4	0.87
158,655	2.5	1	84.1	0.83

184,060	2.4	0.9	81.6	0.8
211,855	2.3	0.8	78.8	0.77
241,964	2.2	0.7	75.8	0.73
274,253	2.1	0.6	72.6	0.7
308,538	2	0.5	69.1	0.67

344,578	1.9	0.4	65.5	0.63
382,089	1.8	0.3	61.8	0.6
420,740	1.7	0.2	57.9	0.57
460,172	1.6	0.1	54.0	0.53
500,000	1.5	0	50.0	0.5

539,828	1.4	-0.1	46.0	0.47
579,260	1.3	-0.2	42.1	0.43
617,911	1.2	-0.3	38.2	0.4
655,422	1.1	-0.4	34.5	0.37
691,462	1	-0.5	30.9	0.33

725,747	0.9	-0.6	27.4	0.30
758,036	0.8	-0.7	24.2	0.27
788,145	0.7	-0.8	21.2	0.23
815,940	0.6	-0.9	18.4	0.20
841,345	0.5	-1	15.9	0.17

864,334	0.4	-1.1	13.6	0.13
884,930	0.3	-1.2	11.5	0.10
903,199	0.2	-1.3	9.7	0.07
919,243	0.1	-1.4	8.1	0.03
933,193	0	-1.5	6.7	0.00