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Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects
United States Air Force, Air Technical Intelligence Center · 1955-05-05 · 309 pages · text from the file's own layer
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“Punch”14 pages
- p. 7 …Air Force on unidentified aerial
objects were reduced to IBM punched-card abstracts of the data…
- p. 10 …form suit-
able for transfer to IBM punched cards was extremely difficult ""and time
consuming.
For…
- p. 14 …Thus, the selection of the IBM punched-
card system for analysis of data forced the adoption…
- p. 18 …Multiple punching elirninated the need to use several columns
for discrete expression of the variations., Selection…
- p. 22 …counting, and tabulating the information from the punched-card
abstracts of reports of sightings. It was…
- p. 23 f
m
translation and transcription from reports to punched cards, indicated that
there would be relatively…
- p. 63 …cosines, and tangents of
angles had been punched for each 0.01 of a degree from…
- p. 68 …These group numbers were punched on the cards and incorporated
into the coding system. The number…
- p. 296 Observer's
Data
Sheet
Question
WORK SHEET
Punched
Card
Column Code Description
2
3
h Serial…
- p. 297 Observer's
Data
Sheet
Question
Punched
Card
Column Code Description
6.
7. a.
1 0 .
Ui…
- p. 299 …If no data
are available for any column, the Y (or 12 punch) should be used…
- p. 300 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
I.
f? •
f V :
HIT…
- p. 306 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
1.
1
2
k
12…
- p. 307 …Air Force Technical
Information Sheet Question
Punched
Card
Column Code Description
3o
hi
U6
75*
76…
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STUDY NO. IO2-EL-55/2-79
ANALYSIS OF REPORTS OF
UNIDENTIFIED AERIAL OBJECTS
PROJECT NO. 10073
5 MAY 1955
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About this file
Analysis, from the classic collection. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.