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
tfpj/t? —T-/2/6 £!//}£//S!T//3/1/ fiZ /?£Jf£7' .
240
-1£.
-J£.
Doubtful
/J7
£0?
20?
a
7
0
9
0
*t*
Total
/W
48
12
ffff
»ft
Percent
Certain
fu/
/t.e
/*/
/4
a/
0.9
/•6
/?.;
Doubtful
't*
0.S
00
00
' • '
Total
21. t
?(•{,
1.2
0?
04
/£>•/
ft?
/00
f/?/*///? ^0(T/^r/0/y
Number
Jeitain
29
10
2.
2JS
?£
1g
Ooubttul
ttt \
'97
ft/
17
9
0
(T
17
512
Total
?(?
¥t>
a
4f
9/
Per Cent
Certain
J2-S
/2.5
/• r t » n
0
z
1
0
0
I
J
0
f
Doubtful
0
CL
e_
0
0
0
.j?.
L
0
0
/
Total
... 0
z
0
O
2.
/
/
O
f
Percent
Certain
0.0
25.0
2S0
0.0
AtL
0-0
ft.*
ft*
Doubtful
0,0
00
00
OP
no
0.0
0.0
/is
00
/2-S
Total
(?,o
2S.0
7S.P
0.0
O^O
00
&.p
/2.S
fZS
0.0
700.
£i£s£0f£
Number
Certain
*f
'j
&
0
0
0
JA
00
0,0
00
2S.0
0.0
20.0
0,0
100.
/?VST
Nutter
Certain Doubtful
V
Total
\
J
PerCent
Certain
V
Doubtful Total
Number
Certain Doutittu Total
PerCoit
Certain Doubtful Total
TOTALS to MOT WITH WSVIOOS 7*0 £UiHTt/O5S AT f/VtAJtxvH
242 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.