Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 124 of 312
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TABLE A10 EVALUATION OF ALL 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 | 11.1 | 3.7 | 14.8 | 3 | 3 | 6 | 2.9 | 2.9 | 5.8 1-Astronomical | 4 | 4 | 8 | 26.7 | 26.7 | 53.4 | 4 | 1 | 5 | 22.2 | 5.6 | 27.8 | 1 | 0 | 1 | 3.7 | 0.0 | 3.7 | 18 | 0 | 18 | 17.5 | 0.0 | 17.5 2-Aircraft | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 2 | 4 | 11.1 | 11.1 | 22.2 | 3 | 2 | 5 | 11.1 | 7.4 | 18.5 | 15 | 8 | 23 | 14.6 | 7.8 | 22.4 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 | 1 | 0 | 1 | 1.0 | 0.0 | 1.0 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 3.7 | 0.0 | 3.7 | 3 | 1 | 4 | 2.9 | 1.0 | 3.9 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 | 3.7 | 3.7 | 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 | 3.7 | 0.0 | 3.7 | 10 | 0 | 10 | 9.7 | 0.0 | 9.7 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 | 1.0 | 0.0 | 1.0 8-Unknown | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 5 | 0 | 5 | 27.8 | 0.0 | 27.8 | 4 | 0 | 4 | 14.8 | 0.0 | 14.8 | 38 | 0 | 38 | 36.9 | 0.0 | 36.9 9-Other | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 2 | 0 | 2 | 11.1 | 0.0 | 11.1 | 1 | 9 | 10 | 3.7 | 33.3 | 37.0 | 2 | 0 | 2 | 1.9 | 0.0 | 1.9 Total | 11 | 4 | 15 | 73.3 | 26.7 | 100. | 15 | 3 | 18 | 83.3 | 16.7 | 100. | 14 | 13 | 27 | 51.8 | 48.2 | 100. | 91 | 12 | 103 | 88.4 | 11.6 | 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 | 15 | 4 | 19 | 13.3 | 3.5 | 16.8 | 26 | 6 | 32 | 14.8 | 3.9 | 18.2 | 98 | 54 | 142 | 11.3 | 6.9 | 18.2 | 36 | 41 | 77 | 9.1 | 10.3 | 19.4 1-Astronomical | 16 | 2 | 18 | 14.2 | 1.8 | 16.0 | 24 | 17 | 41 | 13.6 | 9.7 | 23.3 | 99 | 34 | 133 | 12.7 | 4.3 | 17.0 | 43 | 26 | 69 | 10.8 | 6.6 | 17.4 2-Aircraft | 17 | 12 | 29 | 15.0 | 10.6 | 25.6 | 26 | 12 | 38 | 14.8 | 6.8 | 21.6 | 123 | 88 | 211 | 15.7 | 11.3 | 27.0 | 45 | 43 | 88 | 11.4 | 10.8 | 22.2 3-Light Phenom. | 3 | 0 | 3 | 2.7 | 0.0 | 2.7 | 1 | 0 | 1 | 0.6 | 0.0 | 0.6 | 12 | 4 | 16 | 1.5 | .5 | 2.0 | 5 | 6 | 11 | 1.3 | 1.5 | 2.8 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 1 | 5 | .5 | .1 | .6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 5-Clouds, Dust, etc. | 8 | 0 | 8 | 7.1 | 0.0 | 7.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 1 | 5 | .5 | .1 | .6 | 0 | 1 | 1 | 0.0 | .3 | .3 6-Insuffic. Info. | 6 | 0 | 6 | 5.3 | 0.0 | 5.3 | 20 | 0 | 20 | 11.4 | 0.0 | 11.4 | 70 | 0 | 70 | 9.0 | 0.0 | 9.0 | 35 | 0 | 35 | 8.8 | 0.0 | 8.8 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 0 | 4 | 2.3 | 0.0 | 2.3 | 9 | 6 | 15 | 1.2 | .8 | 2.0 | 8 | 1 | 9 | 2.0 | .3 | 2.3 8-Unknown | 20 | 0 | 20 | 17.7 | 0.0 | 17.7 | 33 | 0 | 33 | 18.8 | 0.0 | 18.8 | 163 | 0 | 163 | 20.8 | 0.0 | 20.8 | 93 | 0 | 93 | 23.4 | 0.0 | 23.4 9-Other | 9 | 1 | 10 | 8.0 | 0.9 | 8.9 | 6 | 1 | 7 | 3.4 | 0.6 | 4.0 | 21 | 1 | 22 | 2.7 | .1 | 2.8 | 9 | 5 | 14 | 2.3 | 1.3 | 3.6 Total | 94 | 19 | 113 | 83.2 | 16.8 | 100. | 140 | 36 | 176 | 79.6 | 20.4 | 100. | 593 | 189 | 782 | 75.8 | 24.2 | 100. | 274 | 123 | 397 | 69.7 | 31.3 | 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 | 2.5 | 6.8 | 9.3 | 8 | 12 | 20 | 8.7 | 13.1 | 21.8 | 2 | 9 | 11 | 3.0 | 13.4 | 16.4 | 0 | 3 | 3 | 0.0 | 4.6 | 4.6 1-Astronomical | 22 | 9 | 31 | 13.6 | 5.6 | 19.2 | 13 | 10 | 23 | 14.1 | 10.9 | 25.0 | 5 | 8 | 13 | 7.5 | 11.9 | 19.4 | 11 | 9 | 20 | 16.7 | 13.6 | 30.3 2-Aircraft | 10 | 36 | 46 | 6.2 | 22.2 | 28.4 | 5 | 13 | 18 | 54 | 14.1 | 9.5 | 3 | 3 | 6 | 4.5 | 4.5 | 9.0 | 1 | 13 | 14 | 1.5 | 19.7 | 21.2 3-Light Phenom. | 1 | 2 | 3 | .6 | 1.2 | 1.8 | 0 | 4 | 4 | 0.0 | 4.3 | 4.3 | 2 | 1 | 3 | 3.0 | 1.5 | 4.5 | 1 | 0 | 1 | 1.5 | 0.0 | 1.5 4-Birds | 1 | 2 | 3 | .6 | 1.2 | 1.8 | 4 | 1 | 5 | 4.3 | 1.1 | 5.4 | 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 | 0.6 | 0.6 | 0 | 1 | 1 | 0.0 | 1.1 | 1.1 | 0 | 8 | 8 | 0.0 | 11.9 | 11.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 12 | 0 | 12 | 7.4 | 0.0 | 7.4 | 4 | 0 | 4 | 4.3 | 0.0 | 4.3 | 4 | 0 | 4 | 6.0 | 0.0 | 6.0 | 3 | 0 | 3 | 4.6 | 0.0 | 4.6 7-Psychological | 1 | 0 | 1 | 0.6 | 0.0 | 0.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 1.5 | 0.0 | 1.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 8-Unknown | 42 | 0 | 42 | 25.9 | 0.0 | 25.9 | 14 | 0 | 14 | 15.2 | 0.0 | 15.2 | 19 | 0 | 19 | 28.4 | 0.0 | 28.4 | 22 | 0 | 22 | 33.4 | 0.0 | 33.4 9-Other | 6 | 2 | 8 | 3.7 | 1.2 | 4.9 | 2 | 1 | 3 | 2.2 | 1.1 | 3.3 | 2 | 0 | 2 | 3.0 | 0.0 | 3.0 | 3 | 0 | 3 | 4.6 | 0.0 | 4.6 Total | 99 | 63 | 162 | 61.1 | 39.9 | 100. | 50 | 42 | 92 | 54.4 | 45.6 | 100. | 38 | 29 | 67 | 56.7 | 43.3 | 100. | 41 | 25 | 66 | 62.1 | 37.9 | 100. 115