Documents / FOIA release
(Analysis of Reports of Unidentified Aerial Objects)
Central Intelligence Agency · 2005-07-12 · 312 pages · text by OCR
This CIA-released copy of Project Blue Book Special Report No. 14 is dated 5 May 1955 and comes from the Air Technical Intelligence Center at Wright-Patterson Air Force Base. It is a statistical analysis of about 4,000 unidentified aerial object reports from 1947 through 1952, coded onto IBM punched cards with the help of a panel of scientists. The report concludes that such objects were highly unlikely to be technological developments beyond present-day scientific knowledge. It also found no valid evidence of physical matter.
“Midwest”11 pages
- p. 6 …in the Strategic Areas of the Central Midwest Region 50
Figure 35 Comparison of Evaluation of…
- p. 62 …COMPARISON OF EVALUATION OF OBJECT SIGHTINGS IN THE STRATEGIC AREA OF THE SOUTH MIDWEST REGION
B…
- p. 115 …Evaluation of Object Sightings in the Strategic Areas of the Central Midwest Region | 252 |
| Table A237…
- p. 254 …0.0 18.8
NORTH MIDWEST CENTRAL MIDWEST SOUTH MIDWEST
Evaluation Number Per Cent Number Per…
- p. 255 …0.0 8.0
NORTH MIDWEST CENTRAL MIDWEST SOUTH MIDWEST
Evaluation Number Per Cent Number Per…
- p. 257 …5
Evaluation CHICAGO DAYTON BALANCE OF CENTRAL MIDWEST
Number Per Cent Number Per Cent Number Per…
- p. 258 …CIA-RDP81R00560R000100060001-5
Evaluation ATLANTA WACO SAN ANTONIO BALANCE OF SOUTH MIDWEST
Number Per Cent Number…
- p. 259 …2
Evaluation CHICAGO DAYTON BALANCE OF CENTRAL MIDWEST
Number Per Cent Number Per Cent Number Per…
- p. 260 …CIA-RDP81R00560R000100060001-5
Evaluation ATLANTA WACO SAN ANTONIO BALANCE OF SOUTH MIDWEST
Number Per Cent Number…
- p. 261 …2
Evaluation CHICAGO DAYTON BALANCE OF CENTRAL MIDWEST
Number Per Cent Number Per Cent Number Per…
- p. 262 …CIA-RDP81R00560R000100060001-5
Evaluation ATLANTA WACO SAN ANTONIO BALANCE OF SOUTH MIDWEST
Number Per Cent Number…
TABLE XI CHI SQUARE TEST OF REVISED KNOWNS VERSUS UNKNOWNS ON THE BASIS OF DURATION OF OBSERVATION
Duration of Observation Number of KNOWNS Adjusted Number of KNOWNS(K) Number of UNKNOWNS(n) X2,(K-n)2/K
5 sec or less 92 31 27 0.52
6-10 sec 47 16 21 1.56
11-30 sec 118 40 33 1.23
31-60 sec 92 31 42 3.90
61 sec-5 min 252 85 99 2.31
6 min-30 min 259 87 71 2.94
Over 30 min 91 31 37 1.16
Not stated 335 113 104 0.72
Total 1286 434 434 14.34
Degrees of freedom 7
5% 14.1
1% 18.5
About this file
FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 312 pages are in the text index: search them above, or from the library's search.