Documents / Report
This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.
ft v INDEX OF TABLES (Continued) ' Page Table A59. Evaluation of All Sightings for 1952 by Sighting Reliability Groups, Civilian Observers '5<? Table A60. Reported Colors of Objects Sighted by Years, All Sightings ., 140 Table A61. Reported Colors of Objects Sighted by Years, Unit Sightings 140 Table A62. Reported Colors of Objects Sighted by Years, Object Sightings 140 Table A63. Evaluation of All Sightings for AH Years by Colors Reported 141 Table A64. Evaluation of Unit Sightings for All Years by Colors Reported 142 Table A65. Evaluation of Object Sightings for All Years by Colors Reported 143 Table A66. Evaluation of All Sightings for All Years by Number of Objects per Sighting, One Object 144 Table A67. Evaluation of All Sightings for All Years by Number of Objects per Sighting, Two Objects ; . . 144 Table A68. Evaluation of All Sightings for All Years by Number of Objects per Sighting, Three to Ten Objects 145 Table A69. Evaluation of All Sightings for All Years by Number of Objects per Sighting, Eleven or More Objects • . . . . . • 145 Table A70. Evaluation of All Sightings for All Years by Number of Objects per Sighting, . . . . Number of Objects Not Stated 146 • i , Table A71. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting, One Object 147 Table A72. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting, Two Objects 147 Table A73. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting, Three to Ten Objects 148 Table A74. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting, Eleven or More Objects . 148 Table A75. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting, Number of Objects Not Sta'ted 149 Table A76. Evaluation of Object Sightings for All Years by Number of Objects per Sighting, One Object 150 Table A77. Evaluation of Object Sightings for All Years by Number of Objects per Sighting, Two Objects . 150 Table A78. Evaluation of Object Sightings for All Years by Number of Objects per Sighting, Three to Ten Objects 151 Table A79. Evaluation of Object Sightings for All Years by Number of Objects per Sighting, Eleven or More Objects . . . 151 Table A80. Evaluation of Object Sightings for All Years by Number of Objects per Sighting, Number of Objects Not Stated . . . . . . . . . 152 Table A 81. Evaluation of All Sightings by Duration of Sighting, All Years 153 Table A82. Evaluation of All Sightings by Duration of Sighting, 1947 153 99
Report, cited by the archive. 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.