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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
Fo/t /ILL. S/jN P^RNfc S- ;• t- M T H E R NOT 5TflTED Total JAIV !//)£.!/ Const £ 7 Number Variable / 0 (5 0 0 1 Total q 1? 7 o IS 59 Percent Const JU m M i Variable 1-1 0,6 O.b 0,0 00 0-0 Total 15,': 3d\ n>a 00- Number Const o 2. j Variable 0 0 0 (3 0 0 Total J 3 0 , 2 1 Per Cent Consl ML Jil 0.0 m J#.r) Variable AD 0.0 04 0.0 0.0 0.0 6.6 Total 111 IU w. Number Const x. 1 1 Q_ $1 Variable 1 0 0 0 0 0 1 Total 21 j/ 7 0 X Per Cent Const _Jt 1,11 JU Jll o.o 35 (¥.\ Variable 1.1 o.c oo OA 04 0.0 / • * Total i 49.2. 11 0.0 3.1 106. AP#IL Number Const 9 1 */ 0 II Variable 1 1 o o 0 0 I Total 3/) 2 %l 0 II H7 Per Cent Const m *y 3 I.'j 0.0 Variable 7 1 0-0 M o.oiOO.l V . S Total 3/7 V3 (0.O 10/3. Jt!>t;rpooRS '•IN pLftNE «-/NRLDG. 5- 6- 7- 8- 9-OTHER. MOT STflTEO Tom M/)i/ Number Consl 3 Variable 0 3 0 0 o o 3 Total ) 33 3 0 Per Cent Const j n J*A -0£ J>JL us93.1 Variable o.b Q.L M CO Total n 0-0 (\.O 11.1 Ji//l/£ Number Const 3 1? __L 6 __& 3 Variable 0 0 0 o o o 0 Total 3 ifi 0 0 .? Percent' Const 12.0 MA JLO O.b Variable 0M ol 0-C 0.0 0 fit Total \M> 111) u0.D at \u Jc/i-V Hunter Const 1 1 0 Variable 0 0 o o o o 0 Total V 9 / 0 0 1* Percent Const ML 0-0 0.0 3ttA 100.0 Variable 0.1) fl-C 0-0 0-0 0.0 Total H.U U 0.0 6.0 Number Const / / 31 0 0 & _ i JL Variable 0 0 0 o 0 0 0 Total II o o 0 9 Percent Const 1L2 O.O o.o 0.0 /7.3 IQO.O Variable fi-0 0.0 0.6 0-0 0.6 OA c.o Total us no n-s 106- 10- '-IN CftP hlM PI-RNE •-IN RUDG.. 5- 6- 7- 8- 9-OT1+ER. NOT STATED Total SE(>TEM8E/£ ' Number Consl 1 0 o O Variable o 0 o (J 0 0 0 Total I 2, o o 0 o 3 PetCent Const U.I 0.0 Variable] Total _M332 fi.h OJ) 01 u ox oi oi Number Const 1 3 _ ^ 0 _ 4 13 Variable o O O Q o o Q Total 1 0 o 1 i3 Percent Const JA Mi J i l _^5 0.1 2bA 100.6 Variable 0-0 cfi 0,0 0,d 0,0 Total r\ A0 ^.7 /06. A>G>i/£Wff£ie Hunter Const JL _ J L . I IS Variable r> 0 O O o o 0 Total •P I1 1 15 3H Per Cent Const 5. 100- D&e.£mg£/e. Number Const _ 1 _ i _i2 -1 Variable o 3 o0 0 0 3 Total 7 0 0 1 V\ P n C e n t Const 05.9 M.2 \H$ O.0 o.O m Variable II. I 0.0 Q.O 0.0 0.6 II-1 Total , ? * * 0.0 15.9 216
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