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.
“R.G.”3 pages
Evaluation O-Balloon 1-Aslnnomical 2-Aircr«tt 3-Light Ptienom. 4-Birds S-Clouds, Dust, e t c trlmutlic Info. 7-Psydo logical 8-Unknown mother Total JfCa Number Certain —4 /0 2. o 0 0 _J2_ Doubtful 0 £i ' 0 0 0 0 0 o 0 o Tolal 0 /? 2. 0 0 0 0 1 0 f t Certain ito 4i~i~ it 0 0 0.0 0.0 0.0 4-1 00 si/ £V/?c&i/}r/0/u »er Cent Doubtful 0.0 fi.o \ a o ^0-\ 0.O Off o.o 0.0 Total 00 Si* ?•/ p.p 0.0 o.o 0.0 o.o OP J0O. CetUm B f 0 6 e / 0 j 1 T/0A> Number Doubtful a o / o o 0 o o o 0 / £_U/l/'f Total _ J 2 _ 2, 0 0 O / 0 2, P /o 0F Certain 00 •fro /0.O 0,0 0.0 0,0 /O.O to 0.0 jo* S/, 'erCent Doubtful 00 00 /O.O 0.0 0.0 0.0 o..o o.o e.o o.o /O.0 Total 0.0 7P.O ao 0.0 0.0 /OP 0t/p 0.0 /0O. SriS (a s F06 6 , f£0 //-3 / 0.0 /OS. _ £?!/.£* Jo /V,rf»res Number Certain _ i 'I1 a -6 0 0 / Doubtful / a o o 0 0 / f Total ^//i/a 6*?&GA/ I?/?Js. ' Number Certain 6 -L 1 0 0 -JL 0 -JL J 0 S Doutlful £_ /0 O O O 0 O 0 0 O /ig_ Total O 1' 1 p 0 0 J P / f Certain fi0 £-7 /IP 00 0.0 fi « 33.3 Percent Doubtful O.O U-7 0.0 0.0 0.0 0.0 0,0 so e.o &C-7 Total 00 7SV (••7 00 0.0 0.0 00 0 0 2.O.0 0,0 (00. //-S0 S Number- Certain 0 0 0 O 0 0 } 0 / Doubtful O 2, 0 O 0 0 0 O O 3 Total 0 f '/ 0 O O 0 O / 0 / / Percent Certain t.o ALA JLCL JJZ. JLo_ O.o JLS_ SJ- O.o Doubtful O.O 1*2 91 '0 00 0.0 0.0 0.0 27.5 Total 0,0 tl.t ?•/ 00 0.0 0,0 0.0 O.O 9./ (00. Certain p 1 0 0 0 0 / P K-60 J Number Doubtfu1 0 O O O a 0 0 0 -C Total 0 0 0 O 0 0 0 O Certain SO-0 0 0 0 0 0 Total / '1, 2, 0 e d O JL Doubtful 0 0 0 0 0 (> O O a 0 Total / / / 0 0 0 0 0 J 0 Per Cent Certain /t.7 0p_ O.o 0.0 lOOt Doubtful O.O O,o 0.0 0.0 O. 0 JL°- O a O.o '0.6 0.6 Total fa 7 //.,7 //„•/ 0.0 #r STATED Number Certain 0 JJL / 0 0 6 O ../. Doubtful O /f 2. a 0 0 0 a 0 A/ Total O S3 s 0 O 0 0 / Per Cent Certain J/o 361.4 1.2 00 0.0 0.0 /.I* Doubtful 0.0 4/-3 4-5 0.0 00 0.0 0.0 *.o 0.0 0,0 4*~i Total 0.0 7/. 7 0.0 0.0 0,0 IS.0 0-0 ?-2 /00. 226
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.