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.
“Roe”1 page
^ ^ • > - • - - Evaluation 0-Balloon 1-Astnnomical 2-Airciaft 3-LigM Pnenoa. 4-Birds S-Cloudj, Dust, etc frlnsufHc M o . 7-PsvctalofipU. I - U n l m « n / »Oth«r Total Evaluation 0-Balloon 1-Astnnonical 2-AircraR 3-Light Phenoa. 4-Birds S-Clouds, Dust, etc. 6-lnsuffic Info. /-Psychological S-Unknowi 9-Other Total Evaluation D-Balloon 1-Astronomical 2-Aircraft 3-Light Ptienom. 4-Birds S-Clouds, Dust, etc (•Insulfic Info. 7-Psychological t-UnknoMi 9-Other Total Certain 0 0 0 0 0 /) 3 Number Doubtful 0 ^_ 0 0 0 0 0 (9/0t * u£ Percent Certain £O £JL Z££. 00 0.0 _£& £0 0.0 £0.0 Doubtful 0-0 0.0 00 00 0.0 0,0 00 0.0 $0.0 Tola] Too /so /),!? fi-0 (Oo *P fl.p /00, Percent Certain 0.0 0,0 A/L JHL 00 0.0 m 0.0 $00 Doubtful 20.0 00 OO f?.0 ao 00 oo 200 Total 0-0 U-7 00 00 0.0 o.o /I 2 0.0 /OO. s/4 • re rEA./ . Number Certain 0 / _£_ / 0 0 0 3 0 Doubtful 0 0 0 0 0 0 0 0 0 Total 0 / 0 / 0 0 3 0 £ r Certain 00 //.•7 a. 7 00 00 00 00 &•/> 00 /O0.0 Jer Cent Doubtful 0.0 0.0 0.0 00 0-0 0.0 0.0 0.0 0.0 Total 00 /i.7 00 /t.7 00 0.0 0.0 &>•(? 0-0 /O0. Number ;ertain / /¥ 0 0 / 0 7 30 Doubtful 0 0 0 0 0 0 // A Total / 20 ,/ 0 0 0 7 4/ /ei/e Number Certain 0 J 0 £_ 0 0 0 3 0 Doubtful / 0 0 0 0 0 0 0 0 / Total 0 0 0 & p 0 3 0 7 Percent Certain M. / / / ^ 0.0 0.0 o.o 24 0.0 fit/3z Doubtful 0.0 /¥-L /2.1 O.£> 0.0 00 0-0 O.0 O4 tr.o 26$ Total ?S 4f7 2L.S 0.0 o.C 0.1 M 6.O a/ (on- PerCent Certain _0JL Jz9 O.O 0.0 0.0 0.0 ao ft.f ao Ss.t Doubtful 0-0 0.0 0.0 0.0 00 0-0 0.0 O 0.0 0.0 0 0 66.7 Total 00 (00.1 0./} J2JZ O.O 0.0 0-0 0.0 0O O.r> 166
Report, cited by the archive. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.