Documents / Report

Project Blue Book Special Report (second copy)

Internet Archive · 309 pages · text from the file's own layer

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.

Open the PDF at page 133 Original source ↗ 
mmmmmmmm
Evaluation
0-Balloon
! I-Astnnomial
?-Auciaft
3-L.fM PnenM.
4-Bircb -
S-Cloudv Dust, etc
frliuuflic mfo.
7P«vcholo|icil
t-lMnmn
MMwr
Total •
Evaluation
0-Bailoon
1-Astnrmical
2-Aircraft
3-Li^it PhcntML
4-Binb
5-Clouds, Oast, etc
6-Biaflic. M L
7-PjjeWotical
l-UnaMM
M & e f
Total
Evaluation
0-Ballow
1-Astnmaical
2-Aircraft
J-Li«til Pkenoa.
4-Binls
Klouds, Oast, etc
U n a f l i c Into.
7-Ptythoiopeal
t - U n t o o
MOW
Total
TflJi £• / • £ / PMtr 1/rtT
Nunbei
Certan
0
u
0
0
J
0
2
i
1
Certain
o
a
0
•s
0
r
JL
Of
Doubtful
/
r
/0
o
0
0
• D
P
7
Number
Doubttu
0
z
3
0
0
0
0
0
0
f
Total
1
7
0
p
0
Q
1
n
Total
9
7
0
0
0
s
0
a?
Certan
0.0
us
35.0
0.0
0,0
fit
0-0
0-0
/:?.?
5Cl
r •
Certain
13.8
70-7
/3.8
0.0
0.0
Co
O.Q
f?2S
'erCent
Doubtful
t-l
31.1
0/>
/? 0
D.O
OP
0 0
Percent
Doubtfu
o.o
t.f
IO>3
ot
0.0
0.0
OS
O.0
o.o
122
Total
6-1
V.TL
CO
0,0
0.0
o.o
/OQ.
I Total
ae
nc
31.1
o-t
(1-9
o-O
ni
•/o
17-7
0.0
100.
5~F/>r£-&#£-/?
Nwber
Certain
/
0
0
0
0
0
1
0
0
0
3
Doubtfu
0

£1
£2
U.l
Doubtful
9.0
25.0
If.3
0.6
O.0
0.0
0.0
04
O.Q
33.5
Total
8-3
333
/it
0M
in
£3
8.3
/oo.
PerCent
Certain
o.o-
II.1
III
Q.O
0.0
0.0
72.2
0.9
II-1
0.0
m
Doubtful
Q.O
33.1
II.1
o.c
00
0.0
Q0
0.0
CO
0.0
Total
0-0
M.I
772
0.0
9-0
m
Q.O
n.\
OQ.
//!/& i W t r/i
Nuaber
>rtan
0
t
0
1
' 1
0
1
Q
10
Doubtful
0
f
0
0
0
0
0
0
0
0
1
Total
0
/3
2
0
0
1
o
l
0
n
Percent
Certain
0.0
VI
IO.S
at
0.0
O,0
S-.3
9.p
Doubtfcl
0.0
419
o.t
64,
OQ
0 0
to
0-0
#£
o.o
ru
Total
0.0
at
0.0
10-5
0.0
J.3
0.0
S-3
0-0
106.
Hunter
Certain
/
0
0
' 0
0
0
3
0
•2
/
7
Doubtfu
0
if_
3
Q
1
Q
o
0
e
0
f?
Total
1-
1
3
9
i
0
3
0
t
1
1$
PetCent
Certain
LL
Q.O
0.0
0.0
0.1
o.o
20- 0
AH
/ 3 . 3
6».7
Doubtful
9-9
l i . l
10. Q
A0
C. 7
i.0
Go
0.0
9.0
53.1
Total
7tn
3 D.O
0.0
(•1
O.Q
70.0
Q.O
13.1
6-7
/to.
Nuinbef __,
;ertain
0
0
JL
0
0
0
0
$
0
Doubtful
7
/
Q
o
Q
0
0
o
0
6
Total
/
9
1
0
0
o
0
0
•n,
0
/I
PerCent
Certain
0.0
?3.3
0.0
0.0
0.0
0.0
0.0.
0-0
It-1
0.0
Doubtful
81
3J.3
If.Z
1.0
O.o
o.o
04
0.0
fO.O
Total
S3
CiC
8.1
o.o
0.0
0.0
6.0
90
Jtl
00
M.
PA- 1&
^/*/f/£-
Certain
/
0
O
0
Q
3
0
n
Nunbet
Doubtbl
0
1
00
0
0
0
O
0
1
Total
/
7
0
0
a
5-
0
3
9
19
Percent
Certain
313
II- 1
Q.O
Q.O
iJ)
37.8
0.0
I t l
O.o
If.i
Doubtful
9.0
3.C
0.6
O-O
0-0
O.O
at
0.0
to
0.0
CO
Total
SI,
Z%.1
III
0.0
0.0
2*i~%
0.0
HI
0.0
/to.
^4l/tf //S7~
Nun>ber
Certain
0
1
1
0
0
0
2
Z
1
0
7
Doubtfu
0
Ik
1
0
O
0
0
9
O
0
IS
Total
0
n
3
0
0
0
X
/
0
Certain
O.t
4.0
4.0
00
P.0
0.0
8.0
9-»
H.O
q.t
28.0
Percent
Doubtful
0-9
C4Q
So
00
0Jt>
00
0£>
O.o
0.0
0.0
Total
O. 0
08.0
17.1
0-0
0.0
Q.O
10
9-t
0.0
100.
Nuaber
Certain
/
Q
Z
0
0
O
1
0
7
n
Doubtfu
O
¥•
0
0
0
0
O
0
0
0
H-
Total
/
2.
0
O
O
\
0
Certain
&.1
/ Z - 3
13. 3
0-0
0--Q
00
C-l
0.0
lt.0
/J.3
13.3
Percent
Doubtful
0.0
?6'6
0.0
0.0
00
0.0
0.0
0.0
&p
0.0
?i,.ii
Total
(.1
•3 IT
/3. 3
9-9
0.0
f 7
0-0
/3.3
loo.
' $ • • :
126
fet

Cited by

Cases discussed

About this file

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.