Documents / Analysis
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“R.G.”3 pages
Evaiation
O-BalloM
i-AstMMical
2-AiraaTt
3-LijM Phenoa.
4-Birdj
S-Clouds, Dust, etc
6-tarflic M > .
7-Psydioloticii
Total
f J£ tv/U/) i £>* t£ss
NumMr
Certain
3
f*
t f
0
70
2
7
736
Doubtful
3
77
P
_/)
- 7
P
P
3
?%
ToUl
•6
'r?
g_
0
70
'0
5L3fy
Per Cent .
Certain
/3
3S:D
0?
AO
P.D
4.3
-^1
y.o
Si/
Doubtful
A3
3A?
&W
0&
P.O
PO
/•3
Total
£7.9
/J4
P.?
P.P
0.1/-
43
P-f
4.3
6>o.
Number
Certain
_ ^
/2-
_L
P
/ / /
03
Doubtful
J
17
P>
O
£?
P
£•?
Total
5~
fi-3
*4
1
0
0
6
Q_
l*L
?/
Percent
Certain
2-2
13-Z
/./
0.0
Off
PO
/s~4
2JL
Doubtful
3-3
J17
n0.0
t.p
0.0
0.0
0.0
p.o
0.0
30.7'
Total
¥73
/./
O.O
P.P
(M
/0O,
NUBkbCf
;«1ain
3
2-4
I
0
0
/3
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r
r
1
P>
z.p>
/
• p
if-
^5-
Total
%
33
//£~
2-
P
/ ^
3
t
/3?
Percent
Certain
2-X
t*3
P>7
P.6
74
J7.P
Zff
V7.6
Doubtful
/&?
P.0
-A2-
0.P
JL?
3Z.4
Total
rf
~23f
7?i
/&4
/ &
2J
'1-0
£f
Number
Certain
?
IE23
P
P
P
/p
13
%' f
Doubtful
9
f
/5~
0
0
0
P
0
P
3 /
Total
3$
p
p>
P
7P
X-
33
'2p
PerCent
Cettain
Z5
7i5^
/7.X
0.0
#0
tf-3
HE
23
Doubtful
75
42.
/&
0.0
pip
00
'•7
Total
•/so
P0
00
13
7-7
4.3-
7PO,
Evaluation
O-Balloon
I-Astmoaical
2-Aircntt
J-LifhtPrnnoa.
4- Birds
5-Clouds, Dust etc
S-lnsuffic fnfo.
7-Psycholoflcal
8-Unknoan
Mttier
Total
Evaluation
0-Balloon
1-Astmomical
2-Airuafl •
3-L.fht Ptumau
4-Birds
5-Clouds, Out, etc
6-lrtsuftic Ufa.
7-Psycaolo(ical
8-Unknow
9-0 th«
Total
6/ ?>£s - S Aj/Aiisres
Number
Certain
p
0
t t
-A
9
713.
Doubtfu
'2?
f
3/
P
J
0
2,
/
7S
Total
73
63,
P
3
'f
7/?
Per Cent __j
Certain
7J&
P.P
3.4
Doubtfu
/at
3.0
/'.£
P4
no
77
P.O
P.7
04
ZS.0
Total
£74
*A
/.?
PO
/,/
67
Z.2
3.f
loo.
A-.ft? A
Number
Certain
&
_L
0
J
M.
JL
£05
Doubtfu
3/
II
2-3
3
P
0
0
P
3
72-
Total
u
49
f
P
2-P
9
'4~
7-7?
•?iA/vr£S
Percent
Certain
70.5
M
2.1
1-2
/7.3
4.P
MO
Doubtful
£3
0.0
pif-
0.0
—&P.
f.O
UP
Total
37.1
MS
#7
3.3
P.0
P1
%2-
3.2-
/7.3
5:/
100,
Nuaber ^
:ertain
21
O
P
A
4
Jt
Doubtfu
/ /
/P
4
2-
P?
0
Total
34
33
P
£~
4-
17
43
Percent
Certain
2P4
20s
Number
Certain
P
P
•51
P
0
P
7
£>
4
0
Doubtful
0
/
0
P
P
£>
P
0>
P
3
Total
0
//
0
P
0-
2-3
PerCent
Certain
43
0.0
0.0
0.0
Z7
Jl
11
43
Doubtful
17.0
0.0
0.0
PP
0,0
00
0.0
P.O
41
39./
Total
/fi3
P.0
47?
O.c
PO
0.C
27
%y
n
u
/oo,
S/- 6 0 f£C0A/0S
Number
Certain
p
0
/
P
$
/
0
JL
0
Doubtfu
P
7
7
P
P
P
P
0
p
Total
0
/
0
0
/
0
JL
_£_
9
PerCent
Certain
O.O
0.0
III
0.0
00
0.0
0.0
£Z2
0.0
444
Doubtful
0.6
If. /
33-J
O.O
0.0
p.0
00
0.0
o.p
5S-,£
Total
00
77/
I/./
P.0
p.P
/ / • /
P.0
Z2Z
P.O
700.
Evaluation
O-Balloon
1-Astnroaical
2-Aircraft
J-Lijtil Prawn.
4-Birds
S-Clouds. Oust etc
Hrwrlfic pfc.
7-Psycral0|ial
t-tMomn
Total
Nuaber
Certain
A
/
/3
P
P
P
2.
7
3P
Doubtful
f
P
f
P
P
0
p
I
0
/ • * / •
Total
" / /
fi
fi
0
7
1
M4
Percent
Certain
/?.&
66
7-9.5
00
P.0
P.t
45
'^3
£3
£1.2
Doubtful
0.0
ttx
6.0
00
00
P.O
P.0
ao
31. f
Total
2S,0
0.0
M7-7
0.0
00
O-o
4.5
46
&
6-JV Af//v//r£s
Nuaber
Certain
5
2~
S
0
0
1
Q
PS
Doubtful
" 3
3
rp
0-
p
0
p
0
0
7/
Total
$
sr
7P
3
p
P
/
0
36
PerCent
Certain
m
sz
f3.f
13
0.0
2$
PO
111
%3
694
Doubtful
O
13. f
P.0
P.P
&t
P.0
0.P
O.0
PO
30.6
Total
73f)
P.0
p.c
A*
P.0
JL
UL
IT.
Doubtful
/
0
3
0
0
t//?ti/ A/ar Sr^r/io
Number
Certain
7
/
p
7
U2.
11
JL
37
Doubtful
,2.
,2.
5>
O
0
P
0
P
A
9
Total
S'
/
7)
p
7
/ /
PerCent
Certain
Jf.3
6f
/M
2.Z
OP
P.O
7^2-
0.0
27.9
%7
Z/,4
Doubtful
4.3
AO
{>.£>
0.P
0-0
0.0
0.0
43
/f.S
Total
# £
70.1
U/
O.O
O.P
I5~2-
0.0
2.3.9
/F.O
I0O.
2 3 8 Analysis, from the classic collection. 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.