TABLE B-3        Standard Deviation Method .
 Master Table for Normal (& Tightened) Inspection for Plans Based      .
      on Variability Unknown   (Double Spec. Lim.–Form 1)              .

Sample size  Sample ------------- AQL (normal inspection) ------------ .
code letter   size   ---   .10   .15   .25 :  .40   .65  1.00  1.50    .
                      M     M     M     M  :   M     M     M     M     .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     B         3      |     |     |     |  :   |     |     v     v     .
     C         4      |     |     |     |  :   |     v   1.53  5.50    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     D         5      |     |     |     v  :   v   1.33  3.32  5.83    .
     E         7      |     |     v   .422 : 1.06  2.14  3.55  5.35    .
     F        10      v     v   .349  .716 : 1.30  2.17  3.26  4.77    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     G        15    .186  .312  .503  .818 : 1.31  2.11  3.05  4.31    .
     H        20    .228  .365  .544  .846 : 1.29  2.05  2.95  4.09    .
     I        25    .250  .380  .551  .877 : 1.29  2.00  2.86  3.97    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     J        35    .264  .388  .535  .847 : 1.23  1.87  2.68  3.70    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     K        50    .250  .363  .503  .789 : 1.17  1.71  2.49  3.45    .
     L        75    .228  .330  .467  .720 : 1.07  1.60  2.29  3.20    .
     M       100    .220  .317  .447  .689 : 1.02  1.53  2.20  3.07    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     N       150    .203  .293  .413  .638 : .949  1.43  2.05  2.89    .
     P       200    .204  .294  .414  .637 : .945  1.42  2.04  2.87    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
                     .10   .15   .25   .40 :  .65  1.00  1.50  2.50    .
                 ------------- AQL (tightnened inspection) ----------- .
                                           :                           .

                                           :
Sample size  Sample ------------- AQL (normal inspection) ------------ .
code letter   size              2.50  4.00 : 6.50 10.00                .
                                  M     M  :   M     M      alpha (%)  .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     B         3                7.59 18.86 : 26.94 33.69      11       .
     C         4               10.92 16.45 : 22.86 29.45      10       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     D         5                9.80 14.39 : 20.19 26.56      10       .
     E         7                8.40 12.20 : 17.35 23.29      10       .
     F        10                7.29 10.54 : 15.17 20.74      10       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     G        15                6.56  9.46 : 13.71 18.94       9-9.1   .
     H        20                6.17  8.92 : 12.99 18.03       8-8.1   .
     I        25                5.97  8.63 : 12.57 17.51       7-7.1   .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     J        35                5.57  8.10 : 11.87 16.65       5.5-6.1 .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     K        50                5.20  7.61 : 11.23 15.87       5       .
     L        75                4.87  7.15 : 10.63 15.13       4       .
     M       100                4.69  6.91 : 10.32 14.75       3       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     N       150                4.43  6.57 : 9.88  14.20       2       .
     P       200                4.40  6.53 : 9.81  14.12       1       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
                                4.00  6.50 :10.00   ---                .
                 ------------- AQL (tightnened inspection) ----------- .

AQL values in percent defective (M values also)
Arrows: use first sampling plan below arrow, ie., both sample size and M.