Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 123 of 312
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TABLE A9 EVALUATION OF ALL SIGHTINGS BY MONTH OF YEAR, 1951 Evaluation | JANUARY | FEBRUARY | MARCH | APRIL Number | Per Cent | Number | Per Cent | Number | Per Cent | Number | Per Cent Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total 0-Balloon | 2 | 2 | 4 | 7.4 | 7.4 | 14.8 | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 1-Astronomical | 1 | 4 | 5 | 3.7 | 14.8 | 18.5 | 0 | 2 | 2 | 0.0 | 13.3 | 13.3 | 1 | 1 | 2 | 16.7 | 16.7 | 33.4 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 2-Aircraft | 0 | 2 | 2 | 0.0 | 7.4 | 7.4 | 0 | 3 | 3 | 0.0 | 20.0 | 20.0 | 0 | 1 | 1 | 0.0 | 16.7 | 16.7 | 1 | 0 | 1 | 33.3 | 0.0 | 33.3 3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 5 | 0 | 5 | 18.5 | 0.0 | 18.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 0 | 2 | 66.7 | 0.0 | 66.7 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 8-Unknown | 10 | 0 | 10 | 37.1 | 0.0 | 37.1 | 7 | 0 | 7 | 46.7 | 0.0 | 46.7 | 3 | 0 | 3 | 50.0 | 0.0 | 50.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 9-Other | 1 | 0 | 1 | 3.7 | 0.0 | 3.7 | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 Total | 19 | 8 | 27 | 70.4 | 29.6 | 100. | 10 | 5 | 15 | 66.7 | 33.3 | 100. | 4 | 2 | 6 | 66.7 | 33.3 | 100. | 3 | 0 | 3 | 100.0 | 0.0 | 100. Evaluation | MAY | JUNE | JULY | AUGUST Number | Per Cent | Number | Per Cent | Number | Per Cent | Number | Per Cent Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total 0-Balloon | 2 | 0 | 2 | 40.0 | 0.0 | 40.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 1 | 2 | 5.0 | 5.0 | 10.0 1-Astronomical | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 2 | 3 | 11.1 | 22.2 | 33.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 2-Aircraft | 1 | 0 | 1 | 20.0 | 0.0 | 20.0 | 1 | 0 | 1 | 100.0 | 0.0 | 100.0 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1 | 1 | 0 | 1 | 5.0 | 0.6 | 5.0 3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 1 | 3 | 10.0 | 5.0 | 15.0 4-Birds | 0 | 1 | 1 | 0.0 | 20.0 | 20.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 0 | 3 | 15.0 | 0.0 | 15.0 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 11.1 | 11.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 8-Unknown | 1 | 0 | 1 | 20.0 | 0.0 | 20.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 0 | 3 | 33.3 | 0.0 | 33.3 | 10 | 0 | 10 | 50.0 | 0.0 | 50.0 9-Other | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1 | 1 | 0 | 1 | 5.0 | 0.0 | 5.0 Total | 4 | 1 | 5 | 80.0 | 20.0 | 100. | 1 | 0 | 1 | 100.0 | 0.0 | 100. | 6 | 3 | 9 | 66.7 | 33.3 | 100. | 18 | 2 | 20 | 90.0 | 10.0 | 100. Evaluation | SEPTEMBER | OCTOBER | NOVEMBER | DECEMBER Number | Per Cent | Number | Per Cent | Number | Per Cent | Number | Per Cent Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total 0-Balloon | 1 | 0 | 1 | 5.6 | 0.0 | 5.6 | 2 | 0 | 2 | 7.1 | 0.0 | 7.1 | 0 | 1 | 1 | 0.0 | 5.9 | 5.9 | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 1-Astronomical | 3 | 1 | 4 | 16.7 | 5.6 | 22.3 | 9 | 1 | 10 | 32.1 | 3.6 | 35.7 | 8 | 5 | 13 | 47.0 | 29.4 | 76.4 | 2 | 1 | 3 | 18.2 | 9.1 | 27.3 2-Aircraft | 1 | 0 | 1 | 5.6 | 0.0 | 5.6 | 4 | 2 | 6 | 14.3 | 7.1 | 21.4 | 2 | 0 | 2 | 11.8 | 0.0 | 11.8 | 4 | 0 | 4 | 36.4 | 0.0 | 36.4 3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 2 | 0 | 2 | 11.1 | 0.0 | 11.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 5.9 | 0.0 | 5.9 | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 8-Unknown | 8 | 0 | 8 | 44.4 | 0.0 | 44.4 | 9 | 0 | 9 | 32.1 | 0.0 | 32.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 9-Other | 2 | 0 | 2 | 11.1 | 0.0 | 11.1 | 1 | 0 | 1 | 3.6 | 0.0 | 3.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 Total | 17 | 1 | 18 | 94.4 | 5.6 | 100. | 25 | 3 | 28 | 89.3 | 10.7 | 100. | 11 | 6 | 17 | 64.7 | 35.3 | 100. | 10 | 1 | 11 | 91.9 | 9.1 | 100. 114