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.
“Midwest”5 pages
INDEX OF TABLES (Continued) Page Table A83. Evaluation of All Sightings by Duration of Sighting, 1948 154 Table A84. Evaluation of All Sightings by Duration of Sighting, 1949 154 Table A85. Evaluation of All Sightings by Duration of Sighting, 1950 155 Table A86. Evaluation of All Sightings by Duration of Sighting, 1951 ' 155 Table A87. Evaluation of All Sightings by Duration of Sighting, 1952 156 Table A88. Evaluation of Unit Sightings by Duration of Sighting, All Years 157; Table A89. Evaluation of Unit Sightings by Duration of Sighting, 1947 157 Table A90. Evaluation of Unit Sightings by Duration of Sighting, 1948 158 Table A91. Evaluation of Unit Sightings by Duration of Sighting, 1949 158 Table A92. Evaluation of Unit Sightings by Duration of Sighting, 1950 159 Table A93. Evaluation of Unit Sightings by Duration of Sighting, 1951 . 159 Table A94. Evaluation of Unit Sightings by Duration of Sighting, 1952 160 Table A95. Evaluation of Object Sightings by Duration of Sighting, All Years 161 Table A96. Evaluation of Object Sightings by Duration of Sighting, 1947 161 Table A97. Evaluation of Object Sightings by Duration of Sighting, 1948 . 162 Table A98. Evaluation of Object Sightings by Duration of Sighting, 1949 . 162 Table A99. Evaluation of Object Sightings by Duration of Sighting, 1950 163 Table A100. Evaluation of Object Sightings by Duration of Sightings, 1 9 5 1 . 163 Table A101. Evaluation of Object Sightings by Duration of Sighting, 1952 : . . . . . 164 Table A102. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Five Seconds or Less 165 Table A103. Evaluation of All Sightings for All Years/by Duration of Sighting for Months of Year, Six to Ten Seconds 166 Table A104. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Eleven to Thirty Seconds 167 Table A105. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Thirty One to Sixty Seconds 168 Table A106. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Sixty One Seconds to Five Minutes 169 Table A107. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Six to Thirty Minutes 170 Table A108. Evaluation of All Sightings for All Years by Duration of Sighting for Months ' ' • of Year, Over Thirty Minutes 171 Table A109. Evaluation of All Sightings for All Years by Duration of Sighting for Months of Year, Duration Not Stated . 172 100
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.