## The Special Fish Report## Albert W. Small (December 1944)## Page 24 |
Tony Sale's Codes and Ciphers |

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convergence of the Delta-Z1, Delta-Z2 rectangle, for Delta-X1, are checked for

significance

by means of this test. Actually the theta terms of the test are not computed,

unless

the answers comes out close to the borderline.

It has been found that the theta terms seldom sum to more than 300,000/N.

Therefore the standard for the X1 wheel is taken as:

- (2.17 X^2)/N > 219 - 300,000/N

- X > 10 (N-1500)^1/2

in the resultant pattern.

- From this formula in simplest terms is calculated a value for X

before the rectangle is called significant.

- The above formula is currently being "argued out;" some persons

others favour the older rule, X>(80N)^1/2. But the one given is the one

now in use, and is referred to in one of the screeds sent by Capt. Fried

as "the better rule." When the computors have converged a pattern to

this point they then turn the rectangle over to the wheel breakers.

- A table showing results obtained with significant rectangles

well. The table to follow compares the two.

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