Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 166 of 312
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TABLE A88 EVALUATION OF UNIT SIGHTINGS BY DURATION OF SIGHTING, ALL YEARS Evaluation | 5 SECONDS AND LESS | 6-10 SECONDS | 11-30 SECONDS | 31-60 SECONDS 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 | 3 | 5 | 8 | 0.8 | 1.4 | 2.2 | 3 | 4 | 7 | 2.2 | 3.0 | 5.2 | 5 | 10 | 15 | 2.3 | 4.6 | 6.9 | 9 | 10 | 19 | 5.5 | 6.1 | 11.6 1-Astronomical | 121 | 106 | 227 | 34.0 | 29.8 | 63.8 | 36 | 23 | 59 | 26.7 | 17.0 | 43.7 | 38 | 14 | 52 | 17.4 | 6.4 | 23.8 | 14 | 8 | 22 | 8.6 | 4.9 | 13.5 2-Aircraft | 23 | 23 | 46 | 6.5 | 6.5 | 13.0 | 20 | 11 | 31 | 14.8 | 8.1 | 22.9 | 40 | 33 | 73 | 18.3 | 15.1 | 33.4 | 31 | 22 | 53 | 19.0 | 13.5 | 32.5 3-Light Phenom. | 2 | 2 | 4 | 0.6 | 0.6 | 1.2 | 1 | 2 | 3 | 0.7 | 1.5 | 2.2 | 1 | 1 | 2 | 0.5 | 0.5 | 1.0 | 0 | 2 | 2 | 0.0 | 1.2 | 1.2 4-Birds | 2 | 4 | 4 | 0.6 | 1.1 | 1.7 | 0 | 1 | 1 | 0.0 | 0.7 | 0.7 | 1 | 1 | 2 | 0.5 | 0.5 | 1.0 | 5 | 1 | 6 | 3.1 | 0.6 | 3.7 5-Clouds, Dust, etc. | 0 | 1 | 1 | 0.0 | 0.3 | 0.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 2 | 2 | 0.0 | 0.9 | 0.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 19 | 0 | 19 | 5.3 | 0.0 | 5.3 | 8 | 0 | 8 | 5.9 | 0.0 | 5.9 | 16 | 0 | 16 | 7.3 | 0.0 | 7.3 | 11 | 0 | 11 | 6.7 | 0.0 | 6.7 7-Psychological | 2 | 0 | 2 | 0.6 | 0.0 | 0.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 5 | 2 | 9 | 2.3 | 0.9 | 3.2 | 2 | 0 | 2 | 1.2 | 0.0 | 1.2 8-Unknown | 31 | 0 | 31 | 8.7 | 0.0 | 8.7 | 24 | 0 | 24 | 17.8 | 0.0 | 17.8 | 38 | 0 | 38 | 17.4 | 0.0 | 17.4 | 43 | 0 | 43 | 26.4 | 0.0 | 26.4 9-Other | 9 | 3 | 12 | 2.5 | 0.8 | 3.3 | 2 | 0 | 2 | 1.5 | 0.0 | 1.5 | 5 | 6 | 11 | 2.3 | 2.8 | 5.1 | 3 | 2 | 5 | 1.8 | 1.2 | 3.0 Total | 212 | 144 | 356 | 59.5 | 40.5 | 100. | 94 | 41 | 135 | 69.6 | 30.4 | 100. | 179 | 69 | 218 | 68.3 | 31.7 | 100. | 118 | 45 | 163 | 72.4 | 27.6 | 100. Evaluation | 61 SECONDS - 5 MINUTES | 6-30 MINUTES | OVER 30 MINUTES | NOT STATED 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 | 55 | 40 | 95 | 13.6 | 9.9 | 23.5 | 67 | 45 | 112 | 15.9 | 10.7 | 26.6 | 35 | 12 | 47 | 17.8 | 6.1 | 23.9 | 51 | 25 | 76 | 7.7 | 3.8 | 11.5 1-Astronomical | 8 | 13 | 21 | 2.0 | 3.2 | 5.2 | 34 | 15 | 49 | 8.1 | 3.6 | 11.7 | 33 | 16 | 49 | 16.8 | 8.1 | 24.9 | 99 | 61 | 160 | 15.0 | 9.3 | 24.3 2-Aircraft | 56 | 54 | 110 | 13.8 | 13.3 | 27.1 | 40 | 44 | 84 | 9.5 | 10.5 | 20.0 | 10 | 10 | 20 | 5.1 | 5.1 | 10.2 | 72 | 38 | 110 | 10.9 | 5.7 | 16.6 3-Light Phenom. | 7 | 4 | 11 | 1.7 | 1.0 | 2.7 | 15 | 6 | 21 | 3.6 | 1.4 | 5.0 | 1 | 2 | 3 | 0.5 | 0.5 | 1.0 | 5 | 2 | 7 | 0.8 | 0.3 | 1.1 4-Birds | 1 | 0 | 1 | 0.2 | 0.0 | 0.2 | 0 | 1 | 1 | 0.0 | 0.2 | 0.2 | 2 | 0 | 2 | 1.0 | 0.0 | 1.0 | 2 | 2 | 4 | 0.3 | 0.3 | 0.6 5-Clouds, Dust, etc. | 0 | 3 | 3 | 0.0 | 0.7 | 0.7 | 1 | 1 | 2 | 0.2 | 0.2 | 0.4 | 1 | 0 | 1 | 0.5 | 0.0 | 0.5 | 1 | 0 | 1 | 0.2 | 0.0 | 0.2 6-Insuffic. Info. | 30 | 0 | 30 | 7.4 | 0.0 | 7.4 | 36 | 0 | 36 | 8.6 | 0.0 | 8.6 | 11 | 0 | 11 | 5.6 | 0.0 | 5.6 | 130 | 0 | 130 | 19.7 | 0.0 | 19.7 7-Psychological | 5 | 4 | 9 | 1.2 | 1.0 | 2.2 | 9 | 0 | 9 | 2.1 | 0.0 | 2.1 | 5 | 1 | 6 | 2.5 | 0.5 | 3.0 | 8 | 2 | 10 | 1.2 | 0.3 | 1.5 8-Unknown | 107 | 0 | 107 | 26.4 | 0.0 | 26.4 | 86 | 0 | 86 | 20.4 | 0.0 | 20.4 | 47 | 0 | 47 | 23.9 | 0.0 | 23.9 | 121 | 0 | 121 | 18.4 | 0.0 | 18.4 9-Other | 15 | 3 | 18 | 3.7 | 0.7 | 4.4 | 15 | 6 | 21 | 3.6 | 1.4 | 5.0 | 8 | 3 | 11 | 4.1 | 1.5 | 6.6 | 35 | 5 | 40 | 5.3 | 0.8 | 6.1 Total | 294 | 121 | 405 | 70.1 | 29.9 | 100. | 303 | 118 | 421 | 72.0 | 28.0 | 100. | 163 | 44 | 197 | 77.7 | 22.3 | 100. | 524 | 135 | 659 | 79.5 | 20.5 | 100. TABLE A89 EVALUATION OF UNIT SIGHTINGS BY DURATION OF SIGHTING, 1947 Evaluation | 5 SECONDS OR LESS | 6-10 SECONDS | 11-30 SECONDS | 31-60 SECONDS 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 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 7.1 | 0.0 | 7.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 1-Astronomical | 6 | 1 | 7 | 75.0 | 125 | 87.5 | 2 | 2 | 4 | 50.0 | 50.0 | 100.0 | 3 | 0 | 3 | 21.4 | 0.0 | 21.4 | 1 | 1 | 2 | 14.3 | 14.3 | 28.6 2-Aircraft | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 7.1 | 7.1 | 0 | 1 | 1 | 0.0 | 14.3 | 14.3 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. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 0 | 2 | 14.3 | 0.0 | 14.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 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 | 7.1 | 7.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 8-Unknown | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 5 | 0 | 5 | 35.7 | 0.0 | 35.7 | 4 | 0 | 4 | 57.1 | 0.0 | 57.1 9-Other | 1 | 0 | 1 | 12.5 | 0.0 | 12.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 7.1 | 0.0 | 7.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 Total | 7 | 1 | 8 | 87.5 | 125 | 100. | 2 | 2 | 4 | 50.0 | 50.0 | 100. | 12 | 2 | 14 | 85.7 | 14.3 | 100. | 5 | 2 | 7 | 71.4 | 28.6 | 100. Evaluation | 61 SECONDS - 5 MINUTES | 6-30 MINUTES | OVER 30 MINUTES | NOT STATED 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 | 28.6 | 0.0 | 28.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | | | | | | | 4 | 0 | 4 | 7.5 | 0.0 | 7.5 1-Astronomical | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | | | | | | | 7 | 4 | 11 | 13.2 | 7.5 | 20.7 2-Aircraft | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 1 | 0.0 | 0.0 | 0.0 | | | | | | | 2 | 0 | 2 | 3.8 | 0.0 | 3.8 3-Light Phenom. | 1 | 0 | 1 | 14.3 | 0.0 | 14.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | | | | | | | 1 | 0 | 1 | 1.9 | 0.0 | 1.9 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 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 6-Insuffic. Info. | 1 | 0 | 1 | 14.3 | 0.0 | 14.3 | 2 | 0 | 2 | 50.0 | 0.0 | 50.0 | | | | | | | 7 | 0 | 7 | 13.2 | 0.0 | 13.2 7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | | | | | | | 3 | 1 | 4 | 5.7 | 1.9 | 7.6 8-Unknown | 2 | 0 | 2 | 28.6 | 0.0 | 28.6 | 2 | 0 | 2 | 50.0 | 0.0 | 50.0 | | | | | | | 11 | 0 | 11 | 20.8 | 0.0 | 20.8 9-Other | 1 | 0 | 1 | 14.3 | 0.0 | 14.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | | | | | | | 13 | 0 | 13 | 24.5 | 0.0 | 24.5 Total | 7 | 0 | 7 | 100.0 | 0.0 | 100. | 4 | 0 | 4 | 100.0 | 0.0 | 100. | | | | | | | 48 | 6 | 53 | 90.6 | 9.4 | 100. 157