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.

-Tsj«a?j,> ,-•-i .. ! • •
r \
0-
'•JN Cfttf
2-OUTDOOK
3-IN PUftNE
5-
&• '
7-
8-
5-OTHBe
Total
FO^ ALL S/6//r/A/6x /?Lt
$
Per Cent
Const
JPi
tf.6
/$.3
/.I
27.7
99.2,
Variable
1.2,
6.d
4.6
O.d
l.t
Total
a
At
Z7.7
#6.
Number
Const
2V
Id
/4
20
-
0
Variable
-
3
0
0
6
7
Tota
27
/I
%O
O
*/3
264
Pir Cent
Const
2£JL\
W.o
t.&
/».O
4.0
£/.£
94.5
Variable
/.s
2.0
0.0
0.0
4.0
3.5
Total
'11
Vr.o
U
/6.S
0.6
fJ.6
/ot.
,0-
ji-//y CArf
3-/nf / * M £
IS-
C'
7-
J*
5- nrtt SR
Total
to A*/
Number
Const
f t
3V
1,
y/
Variable
5
0
0
0
0
.5
Total
/ ^
3V
J.
l
J
• %
2/0
Percent
Const
/2.H
at
U?
HI
Variable
J.6
2.H
0,6
to
4.0
0.0
V.3
Total
4~S
•11-9
ICO.
Number
Const
•
8?
XI
Xi
7
JL
m
Variable
/
/
6
1
a
0
3
Total
71
90
Xi>
7
it
19 X
Percent
Const
a.b
H-l
13.0
3.1
9.1
Variable
oj
0.6
AS
6.0
0.0
1.6
Total
a*
ni
U
f.V
106.
A/0f/EMg£ £
Number
Const
/6
V/
Z
-21
/Jl
Variable
y
3
6
0
&
0
7
Total
/y
33
j,
?3
Percent .
Const
#ry
li-7
Ml
-J2
3.6.1
Variable
2H
19
O.d
6.6
6.6
16
V-3
Total
Zi
291
Mf
}6.l
11
2i-1
HO.
D£eGM/9eie
Number
Const
VS
1
/**
Variable
7
/
0
0
J3
Total
32
54
/ y
24
/L7
Percent
Const
/*?
213
Jl.
4.i
JV.9
Variable
3.fi
Ad
4.0
4-6
77
Total
19.1
27-1
/y.9
<6&.-
213

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.