Control Chart Constants

spc help logoThe control chart constants used in the calculations are shown below.

nd2c4d3c5e1
1  0.82* 
21.1280.7978850.85250.60281 
31.6930.8862270.88840.4632511.16
42.0590.9213180.87940.388811.093
52.3260.9399860.86410.3412131.198
62.5340.9515330.8480.3075471.134
72.7040.9593690.83320.2821541.214
82.8470.965030.81980.2621391.162
92.970.9693110.80780.2458381.223
103.0780.9726590.79710.2322381.174
113.1730.975350.78730.2206631.228
123.2580.9775590.77850.2106621.188
133.3360.9794060.77040.2019011.233
143.4070.9809710.7630.1941541.2
153.4720.9823160.75620.1872311.237
163.5320.9834840.74990.180995 
173.5880.9845060.74410.175351 
183.640.985410.73860.170197 
193.6890.9862140.73350.165475 
203.7350.9869340.72870.161125 
213.7780.9875830.72420.157098 
223.8190.988170.71990.153362 
233.8580.9887050.71590.149875 
243.8950.9891930.71210.146619 
253.9310.989640.70840.143571 
263.9640.9900520.7040590.140702 
273.9970.9904330.7011580.137994 
284.0270.9907860.6983270.135437 
294.0570.9911130.6955650.133023 
304.0860.9914180.6928720.13073 
314.1130.9917030.6902450.12855 
324.1390.9919690.6876850.126481 
334.1650.9922190.6851880.124505 
344.1890.9924540.6827550.122618 
354.2130.9926750.6803850.120815 
364.2360.9928840.6780750.119086 
374.2590.993080.6758250.11744 
384.280.9932670.6736340.115848 
394.3010.9934430.6715010.114328 
404.3220.9936110.6694240.112859 
414.3410.993770.6674020.11145 
424.3610.9939220.6654350.110087 
434.3790.9940660.663520.108779 
444.3980.9942030.6616570.107519 
454.4150.9943350.6598440.106292 
464.4330.994460.6580810.105116 
474.450.994580.6563660.103974 
484.4660.9946950.6546990.102868 
494.4820.9948060.6530770.101789 
504.4980.9949110.65150.100758 
514.5140.9950130.6499670.099745 
524.5290.995110.6484760.098773 
534.5430.9952040.6470260.097821 
544.5580.9952940.6456160.096901 
554.5720.9953810.6442460.096003 
564.5860.9954650.6429130.095129 
574.5990.9955460.6416170.094277 
584.6130.9956240.6403560.09345 
594.6260.9956990.6391290.092647 
604.6390.9957720.6379360.091859 
614.6510.9958420.6367750.091097 
624.6630.995910.6356440.090351 
634.6760.9959760.6345430.08962 
644.6870.996040.633470.088906 
654.6990.9961020.6324250.088209 
664.7110.9961610.6314060.08754 
674.7220.9962190.6304120.086878 
684.7330.9962760.6294420.086221 
694.7440.996330.6284940.085595 
704.7550.9963830.6275680.084976 
714.7650.9964350.6266620.084364 
724.7760.9964850.6257750.083771 
734.7860.9965340.6249070.083186 
744.7960.9965810.6240550.082621 
754.8060.9966270.6232190.082065 
764.8160.9966720.6223970.081516 
774.8250.9967160.6215890.080977 
784.8350.9967590.6207930.080446 
794.8440.99680.6200070.079936 
804.8540.9968410.6192320.079423 
814.8630.996880.6184650.078932 
824.8720.9969180.6177060.078451 
834.8810.9969560.6169530.077966 
844.8890.9969930.6162060.077492 
854.8980.9970280.6154620.07704 
864.9060.9970630.6147220.076586 
874.9150.9970970.6139830.076142 
884.9230.9971310.6132440.075695 
894.9310.9971630.6125050.075273 
904.9390.9971950.6117640.074847 
914.9470.9972260.611020.074433 
924.9550.9972570.6102720.074017 
934.9630.9972860.6095190.073625 
944.9710.9973150.6087590.073231 
954.9780.9973440.6079920.072835 
964.9860.9973720.6072160.072451 
974.9930.9973990.606430.072078 
985.0010.9974260.6056320.071703 
995.0080.9974520.6048230.071341 
1005.0150.9974780.6040000.070976

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