What does Stat. stand for in "84 Stat. 294"?

This is applicable only to the USA .

As a statute (Statutory Law), it is an Act of Congress . Volumes 1 through 18, which have all the statutes passed from 1789 to 1875, have the format :
84 Stat. 294 which means Statute 84 , Page 294 .

Since 1957, Acts of Congress related to the general public have a new format .
For example : The Global Anti-Semitism Review Act of 2004 of October 16, 2004, Pub.L. 108–332, 118 Stat. 1282,
Pub.L. means Public Law as opposed to Private Law
108–332 means it was the 108th Congress, and the 332nd Act of Congress (Statute)
118 Stat. 1282 means Volume 118, starting at page 1282 .

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