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.
“Roe”1 page
# Evaluation 0- Balloon 1-Astronomical 2-Aircratt 3-litfit Phenom. 4-Birds 5-Clouds, Dust, etc C-lnsuflic Into. 7-P5»t)»lotiol (-UnknoMi ».Ot>ier Total Number Certain 3 £/ /f/ 0 0 J? 2. / / S /I/ Doubtful / 0 /} 0 Total /O/ Z? f / 0 3 2 / * 174 PerCent Certain ££- 32. S /o.9 0/s 0.0 0.0 /0.3 Doubtful /• / 25S ' S.7 00 00 /?-P 2.9 36 2. ToUl •££- //t£ # ( • 01 no /•7 / • / /0f 7,* /oo. /9V7 Number Certain / 0 0 0 0 0 0 0 # Doubtful 0 0 0 0 0 0 0 0 ToUl / i 0 0 -JL 0 0 0 3 Per Cent Certain 66 7 #0 /?0 0.0 0.0 0>0 00 /ana Doubtful 0.0 /2.0 00 00 /?.0 0.0 0c? 00 00 Total S3.3 00 0.C0 0.6 0.0 00 /00. Number Certain 7 0 0 0 0 0 0 / 0 g Doubtful 0 0 £?0 00 #•0 00 a0 S~f.6 Total 00 /0. i. 00 00 /06 /00. Evaluation O-Balloon 1-Astrommicar 2-Aucraft 3-Lijnt Ptienon. 4- Birds 5-Clouds, Oust, etc (•Insuffic mfo. 7-Psychological UlnknoMi 9-Other Evaluation O-Balloon 1-Astrononical 2-Aircraft 3-Light Phenom. «-Birds 5-Clouds, Dust, etc 6-lnsuffic. Info. 7-Psychological B-Unknown Wither Total /-0 0,0 0-0 0-0 P0 0-0 /00. /£ 0P 0/fJecr 0r#£/e SMrtf&s /III />$ Number Certain 3V 4 7S-6 Doubtful / / 9-* 4/g 0.0 00 00 0.0 00 2/. w Doubtful ?3 &.g / • / - 0$ 00 00 00 /•0 30.2. Total /ft (71 229" 37 /0 3-7 4-7 3/ 22.4 •3,1 /oo. Number Certain Doubtfu Total Per Cent Certain Doubtful Total 191
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.