Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 131 of 312
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TABLE A17 EVALUATION OF UNIT SIGHTINGS BY MONTH OF YEAR, 1952 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 | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 1 | 0 | 1 | 5.6 | 0.0 | 5.6 | 3 | 1 | 4 | 12.5 | 4.2 | 16.7 | 3 | 3 | 6 | 3.3 | 3.3 | 6.6 1-Astronomical | 4 | 4 | 8 | 26.7 | 26.7 | 53.4 | 4 | 1 | 5 | 22.2 | 5.6 | 27.8 | 1 | 0 | 1 | 4.2 | 0.0 | 4.2 | 15 | 0 | 15 | 16.5 | 0.0 | 16.5 2-Aircraft | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 2 | 4 | 11.1 | 11.1 | 22.2 | 3 | 2 | 5 | 12.5 | 8.3 | 20.8 | 13 | 7 | 20 | 14.3 | 7.7 | 22.0 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 | 1 | 0 | 1 | 1.1 | 0.0 | 1.1 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 4.2 | 0.0 | 4.2 | 3 | 1 | 4 | 3.3 | 1.1 | 4.4 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 4.2 | 4.2 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 5.6 | 0.0 | 5.6 | 1 | 0 | 1 | 4.2 | 0.0 | 4.2 | 10 | 0 | 10 | 11.0 | 0.0 | 11.0 7-Psychological | 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 | 1 | 0 | 1 | 1.1 | 0.0 | 1.1 8-Unknown | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 5 | 0 | 5 | 27.8 | 0.0 | 27.8 | 4 | 0 | 4 | 16.7 | 0.0 | 16.7 | 32 | 0 | 32 | 35.2 | 0.0 | 35.2 9-Other | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 2 | 0 | 2 | 11.1 | 0.0 | 11.1 | 1 | 6 | 7 | 4.2 | 25.0 | 29.2 | 2 | 0 | 2 | 2.2 | 0.0 | 2.2 Total | 11 | 4 | 15 | 73.3 | 26.7 | 100. | 15 | 3 | 18 | 83.3 | 16.7 | 100. | 14 | 10 | 24 | 58.3 | 41.7 | 100. | 80 | 11 | 91 | 87.9 | 12.1 | 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 | 11 | 4 | 15 | 12.5 | 4.5 | 17.0 | 21 | 6 | 27 | 13.0 | 3.7 | 16.7 | 60 | 47 | 127 | 12.2 | 7.2 | 19.4 | 36 | 39 | 75 | 10.3 | 11.2 | 21.5 1-Astronomical | 14 | 2 | 16 | 15.9 | 2.3 | 18.2 | 24 | 17 | 41 | 14.9 | 10.6 | 25.5 | 90 | 30 | 120 | 13.7 | 4.6 | 18.3 | 41 | 25 | 66 | 11.7 | 7.2 | 18.9 2-Aircraft | 12 | 12 | 24 | 13.6 | 13.6 | 27.2 | 26 | 12 | 36 | 16.1 | 7.5 | 23.6 | 97 | 73 | 170 | 14.8 | 11.1 | 25.9 | 41 | 34 | 75 | 11.7 | 9.7 | 21.4 3-Light Phenom. | 3 | 0 | 3 | 3.4 | 0.0 | 3.4 | 1 | 0 | 1 | 0.6 | 0.1 | 0.6 | 12 | 4 | 16 | 1.8 | 0.6 | 2.4 | 5 | 6 | 11 | 1.4 | 1.7 | 3.1 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 1 | 4 | 0.5 | 0.2 | 0.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 2 | 0 | 2 | 2.3 | 0.0 | 2.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 1 | 2 | 0.2 | 0.2 | 0.4 | 0 | 1 | 1 | 0.0 | 0.3 | 0.3 6-Insuffic. Info. | 6 | 0 | 6 | 6.8 | 0.0 | 6.8 | 18 | 0 | 18 | 11.2 | 0.0 | 11.2 | 68 | 0 | 68 | 10.4 | 0.0 | 10.4 | 32 | 0 | 32 | 9.2 | 0.0 | 9.2 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 0 | 4 | 2.5 | 0.0 | 2.5 | 9 | 5 | 14 | 1.4 | 0.8 | 2.2 | 8 | 1 | 9 | 2.3 | 0.3 | 2.6 8-Unknown | 14 | 0 | 14 | 15.9 | 0.0 | 15.9 | 26 | 0 | 26 | 16.1 | 0.0 | 16.1 | 123 | 0 | 123 | 18.8 | 0.0 | 18.8 | 67 | 0 | 67 | 19.2 | 0.0 | 19.2 9-Other | 7 | 1 | 8 | 8.0 | 1.1 | 9.1 | 5 | 1 | 6 | 3.1 | 0.6 | 3.7 | 11 | 1 | 12 | 1.7 | 0.2 | 1.9 | 9 | 4 | 13 | 2.6 | 1.1 | 3.7 Total | 69 | 19 | 88 | 78.4 | 21.6 | 100. | 125 | 36 | 161 | 77.6 | 22.4 | 100. | 494 | 162 | 656 | 75.3 | 24.7 | 100. | 239 | 110 | 349 | 68.5 | 31.5 | 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 | 4 | 11 | 15 | 2.7 | 7.5 | 10.2 | 3 | 9 | 12 | 4.2 | 12.7 | 16.9 | 2 | 8 | 10 | 3.7 | 14.8 | 18.5 | 0 | 2 | 2 | 0.0 | 4.2 | 4.2 1-Astronomical | 22 | 9 | 31 | 15.0 | 6.1 | 21.1 | 10 | 9 | 19 | 14.1 | 12.7 | 26.8 | 5 | 5 | 10 | 9.3 | 9.3 | 18.6 | 9 | 7 | 16 | 18.7 | 14.6 | 33.1 2-Aircraft | 9 | 31 | 40 | 6.1 | 21.1 | 27.2 | 4 | 11 | 15 | 5.6 | 15.5 | 21.1 | 3 | 3 | 6 | 5.6 | 5.6 | 11.2 | 1 | 11 | 12 | 2.1 | 22.9 | 25.0 3-Light Phenom. | 1 | 2 | 3 | 0.7 | 1.4 | 2.1 | 0 | 4 | 4 | 0.0 | 5.6 | 5.6 | 2 | 1 | 3 | 3.7 | 1.9 | 5.6 | 1 | 0 | 1 | 2.1 | 0.0 | 2.1 4-Birds | 1 | 2 | 3 | 0.7 | 1.4 | 2.1 | 1 | 1 | 2 | 1.4 | 1.4 | 2.8 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 0 | 1 | 1 | 0.0 | 0.7 | 0.7 | 0 | 1 | 1 | 0.0 | 1.4 | 1.4 | 0 | 2 | 2 | 0.0 | 3.7 | 3.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 12 | 0 | 12 | 8.2 | 0.0 | 8.2 | 4 | 0 | 4 | 5.6 | 0.0 | 5.6 | 4 | 0 | 4 | 7.4 | 0.0 | 7.4 | 3 | 0 | 3 | 6.2 | 0.0 | 6.2 7-Psychological | 1 | 0 | 1 | 0.7 | 0.0 | 0.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 1.9 | 0.0 | 1.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 8-Unknown | 33 | 0 | 33 | 22.4 | 0.0 | 22.4 | 11 | 0 | 11 | 15.5 | 0.0 | 15.5 | 16 | 0 | 16 | 29.6 | 0.0 | 29.6 | 11 | 0 | 11 | 22.9 | 0.0 | 22.9 9-Other | 6 | 2 | 8 | 4.1 | 1.4 | 5.5 | 2 | 1 | 3 | 2.8 | 1.4 | 4.2 | 2 | 0 | 2 | 3.7 | 0.0 | 3.7 | 3 | 0 | 3 | 6.2 | 0.0 | 6.2 Total | 89 | 58 | 147 | 68.5 | 39.5 | 100. | 35 | 36 | 71 | 49.3 | 50.7 | 100. | 35 | 19 | 54 | 64.8 | 35.2 | 100. | 28 | 20 | 48 | 58.3 | 41.7 | 100. 122