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Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects

United States Air Force, Air Technical Intelligence Center · 1955-05-05 · 309 pages · text from the file's own layer

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.

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  • p. 76 …Apparently these are harder to identify. (3) Shape In this case, there is a higher percentage…
INDEX OF TABLES
(Continued)
Page
#
Table A110. Evaluation of Unit Sightings for A l l Years by Duration of Sighting for Months
of Year, Five Seconds or L e s s , 173
Table A l l l . Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Six to Ten Seconds 174
Table A112. Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Eleven to Thirty Seconds 175
Table A 1 1 3 . Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Thirty One to Sixty Seconds 176
Table A114. Evaluation of Unit Sightings for A l l Years by Duration of Sighting for Months ;
of Year, Sixty'One Seconds to F i v e Minutes ;' 177
Table A115. Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Six to Thirty Minutes 178
Table A116. Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Over Thirty Minutes 179
Table A117. Evaluation of Unit Sightings for All Years by Duration of Sighting for Months
of Year, Duration Not Stated 180
Table A118. Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Five Seconds or L e s s 181
Table A119. Evaluation, of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Six to Ten Seconds 182
Table A120. Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months .
of Year, Eleven to Thirty Seconds . . . . . . . 183
Table A 1 2 1 . Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Thirty One to Sixty Seconds . 184
Table A 1 2 2 . Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Sixty One Seconds to F i v e Minutes 185
Table A 1 2 3 . Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Six to Thirty Minutes 186
Table A 124. Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Over Thirty Minutes 187
Table. A125. Evaluation of Object Sightings for A l l Years by Duration of Sighting for Months
of Year, Duration Not Stated 188
Table A126. Evaluation of All Sightings for All Y e a r s by Shape of Object, Elliptical 189
Table A127. Evaluation of All Sightings for All Years by Shape of Object, Rocket and Aircraft 189
Table A128. Evaluation of All Sightings for All Years by Shape of Object, Meteor or Comet . . . . . . . 190
Table A129. Evaluation of All Sightings for All Years by Shape of Object, Lenticular, Conical,
or Teardrop 190
Table A130. Evaluation of All Sightings for All Years by Shape of Object, Flame 191
Table A 1 3 1 . Evaluation of All Sightings for All Years by Shape of Object, Other Shapes 1 9 1
Table A 1 3 2 . Evaluation of All Sightings for All Years by Shape of Object, Shape Not Stated . . 192
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Analysis, from the classic collection. 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.