Documents / Report
This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.
“Otis”1 page
Evaluation O-Balloon 1-Astronomcal 2-Aircraft 3-Lisht Pherm. •-Birth 5-Clowis, Dust, etc 6-lnsuffic kilo. , 7-PsYcholopal 8-UnkMM M i n e r Total Nunbff Certain Doubtfu Total y PerCent Certain 7 Doublfu Tobl Nunter Certain Doubtful Total - , V P a Cat Certain J y DoublU \ Total Number Certain Doubtful Total A Percent Certain / A * V y Jtouttful Total Nuabrr Certain Doubtful \ Total V PeiCml Certain y DtaiMlul tj^> Total Evaluation 0-Balloon 1-Astnmnical 2-Aircnft 3-Light Phenom. «-Binh 5-Clowts, Dust, etc. 6-lnsuffic kito. 7-Psycholo|ical S-Unknoon ; M t h e t Total Number Certain Doubtful s Total \ ) PerCent Certain Doubtful Total Numbn Certain / 0 o .JL 1 1 U Doubtful 0 1 Q 0 /? 0 0 0 O 0 1 Total / / 0 0 o 3 1 U I /,? Percent Certain *7 p.e> p.o 7.7 7.7 12.3 Doubtful a? 7T fit at> to 0,1 oti 4P 4t 0.0 7.7 Total 77 7-1 JS:o &,e 6-e Q.a 71A 7,7 r.? /0O, J~L>J.f Nuc*M :ertain 6 5 0 1 o o f o IZ JtL Doubtful D I ",£ 0 P 0 0 0 D 7 Total 7- (> O r.2. 13- 16 S!T PerCent Certain //r 9.1 0.0 i * 0.0 ao /«.S 0.0 XI f 29.1 87,3 Doubtful 0,0 ?.(, 0,0 0$ 7,t 0,0 9-0 H,1 Total /(?if /,f ao (?.O Mr 7-11 160, A usurr NrabH Certan t> i 0 0 0 p 0 7 0 IT Owtitfu 0 1 a Q 0 0 0 a 0 1 e. / Total P 7 (? t>,e p.o 00 w I?S 0-f Aff 00 /OP. Evaluation 0-Balloon 1-Astfononical 2-AircraH M i g h t Phenoa. 4-Binb 5-Clouds, Dust, etc 6-lnsuffic Info. 7-Psycholocieal 8-Unknom M t h e t Total SE-p7-jrMg£r/<> Nmber Certain 0 / o 0 0 0 1 ( 3 0 / Doubtfu 0 o 0 0 0 0 0 0 10 o 0 Total 0 t 0 0 0 0 1 1 0 PaCeat Certain 0.0 fC7 M> P.fi 0.6 (LI if-7 SB.O 0./) (00,0 Doubtfu (?,0 OO 0-0 (?,6 M ?, P 0 0 0 / 2. O 12. Doubtful 00 0.0 0.0 fl.Q 6.0 Doubtful P.0 T?J O,0 0,0 0,0 04 0-0 00 0.0 0,0 Total p.o tfifi 0,0 313 o.e 0.0 0,0 o.o 0.0 0,0 106. Numbet Certain o 6.0 0.0 0.0 at 0.6 o.t o.o ao /OOJ Doubtful A0 0.0 0.0 0O 0-0 IP-O 0-0 ao Tom op mo t,o Ob 60 00 Q6 0.0 110
Report, cited by the archive. 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.