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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.
m INDEX OF TABLES (Continued) Page Table A206. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Three to Ten Objects ' 236 Table A207. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting" for Duration of Sighting, Eleven or More Objects 236 1 i Table A208. Evaluation of Unit Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Number of Objects Not Stated ." 237 Table A209. Evaluation of Object Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, One Object 238 Table A210. Evaluation of Object Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Two Objects 238 Table A211. Evaluation of Object Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Three to Ten Objects 239 Table A212. Evaluation of Object Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Eleven or More Objects 239 Table A213. Evaluation of Object Sightings for All Years by Number of Objects per Sighting for Duration of Sighting, Number o£ Objects Not Stated 240 Table A214. Evaluation of All Sightings for All Y e a r s by Geographic Location 241 Table A215. Evaluation of Unit Sightings for All Years by Geographic Location 241 Table A216. Evaluation of Object Sightings for All Years by Geographic Location . . . . . . . . . . . 242 Table A217. Evaluation of All Sightings for All Years by North American Location . 243 Table A218. Evaluation of Unit Sightings for All Years by North A m e r i c a n Location 243 Table A219. Evaluation of Object Sightings for All Years by North A m e r i c a n Location . 244 Table A220. Evaluation of All Sightings for All Years by United States Regional Location 245 Table A221. Evaluation of Unit Sightings for All Years by United States Regional Location 246 Table A222.- Evaluation of Object Sightings for All Years by United States Regional Location 247 Table A223. Evaluation of All Sightings in the Strategic A r e a s of the Central East Region 248 Table A224. Evaluation of All Sightings in the Strategic A r e a s of the Central Midwest Region . 248 Table A225. Evaluation of All Sightings in the Strategic A r e a s of the Central Farwest Region 248 Table A226. Evaluation of All Sightings in the Strategic A r e a s of the South Midwest Region 249 Table A227. Evaluation of All Sightings in the Strategic A r e a s of the Sou^IT^West Region 249 Table A228. Evaluation of All Sightings in the Strategic A r e a s of the South Farwest Region 249 Table A229. Evaluation of Unit Sightings in the Strategic A r e a s of the Central East Region 250 Table A230. Evaluation of Unit Sightings in the Strategic A r e a s of the Central Midwest Region 250 Table A231. Evaluation of Unit Sightings in the Strategic A r e a s of the Central F a r w e s t Region . i . . . . . 250 Table A232. Evaluation of Unit Sightings in the Strategic A r e a s of the South Midwest Region 251 105
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