Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 162 of 312
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TABLE A81 EVALUATION OF ALL 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 | 7 | 10 | 0.7 | 1.6 | 2.3 | 3 | 5 | 8 | 1.8 | 3.0 | 4.8 | 7 | 12 | 19 | 2.6 | 4.5 | 7.1 | 9 | 11 | 20 | 4.6 | 5.6 | 10.2 1-Astronomical | 143 | 143 | 286 | 32.7 | 32.7 | 65.4 | 44 | 28 | 72 | 26.3 | 16.8 | 43.1 | 46 | 17 | 63 | 17.4 | 6.4 | 23.8 | 15 | 10 | 25 | 7.7 | 5.1 | 12.8 2-Aircraft | 28 | 28 | 56 | 6.4 | 6.4 | 128 | 24 | 14 | 38 | 14.4 | 8.4 | 22.8 | 46 | 36 | 82 | 17.4 | 13.6 | 31.0 | 39 | 22 | 71 | 19.9 | 11.2 | 31.1 3-Light Phenom. | 2 | 2 | 4 | 0.5 | 0.5 | 1.0 | 1 | 4 | 5 | 0.6 | 2.4 | 3.0 | 1 | 2 | 3 | 0.4 | 0.8 | 1.2 | 0 | 2 | 2 | 0.0 | 1.0 | 1.0 4-Birds | 2 | 4 | 6 | 0.5 | 0.9 | 1.4 | 1 | 1 | 2 | 0.6 | 0.6 | 1.2 | 1 | 1 | 2 | 0.4 | 0.4 | 0.8 | 6 | 1 | 7 | 3.1 | 0.5 | 3.6 5-Clouds, Dust, etc. | 1 | 1 | 2 | 0.2 | 0.2 | 0.4 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 2 | 2 | 0.0 | 0.8 | 0.8 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 6-Insuffic. Info. | 19 | 0 | 19 | 4.3 | 0.0 | 4.3 | 9 | 0 | 9 | 5.4 | 0.0 | 5.4 | 16 | 0 | 16 | 6.0 | 0.0 | 6.0 | 13 | 0 | 13 | 6.6 | 0.0 | 6.6 7-Psychological | 2 | 0 | 2 | 0.5 | 0.0 | 0.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 5 | 3 | 8 | 1.9 | 1.1 | 3.0 | 2 | 0 | 2 | 1.0 | 0.0 | 1.0 8-Unknown | 39 | 0 | 39 | 8.9 | 0.0 | 8.9 | 31 | 0 | 31 | 18.6 | 0.0 | 18.6 | 56 | 0 | 56 | 21.1 | 0.0 | 21.0 | 61 | 0 | 61 | 31.1 | 0.0 | 31.1 9-Other | 10 | 3 | 13 | 2.3 | 0.7 | 3.0 | 2 | 0 | 2 | 1.2 | 0.0 | 1.2 | 5 | 9 | 14 | 1.9 | 3.4 | 5.3 | 3 | 2 | 5 | 1.5 | 1.0 | 2.5 Total | 249 | 188 | 437 | 57.0 | 43.0 | 100. | 115 | 52 | 167 | 68.9 | 31.1 | 100. | 183 | 82 | 265 | 69.1 | 30.9 | 100. | 148 | 48 | 196 | 75.5 | 24.5 | 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 | 65 | 43 | 108 | 12.8 | 8.5 | 21.3 | 82 | 58 | 140 | 15.6 | 11.0 | 26.6 | 42 | 12 | 54 | 16.9 | 4.8 | 21.7 | 59 | 32 | 91 | 6.9 | 3.8 | 10.7 1-Astronomical | 11 | 16 | 27 | 2.2 | 3.1 | 5.3 | 43 | 17 | 60 | 8.2 | 3.2 | 11.4 | 37 | 17 | 54 | 14.9 | 6.8 | 21.7 | 137 | 93 | 230 | 16.1 | 10.9 | 27.0 2-Aircraft | 77 | 61 | 138 | 15.2 | 12.0 | 27.2 | 45 | 63 | 106 | 8.2 | 12.0 | 20.2 | 13 | 15 | 28 | 5.2 | 6.0 | 11.2 | 84 | 49 | 133 | 9.9 | 5.8 | 15.7 3-Light Phenom. | 7 | 4 | 11 | 1.4 | 0.8 | 2.2 | 15 | 6 | 21 | 2.8 | 1.1 | 3.9 | 1 | 2 | 3 | 0.4 | 0.8 | 1.2 | 5 | 2 | 7 | 0.6 | 0.2 | 0.8 4-Birds | 1 | 0 | 1 | 0.2 | 0.0 | 0.2 | 0 | 1 | 1 | 0.0 | 0.2 | 0.2 | 3 | 0 | 3 | 1.2 | 0.0 | 1.2 | 5 | 2 | 7 | 0.6 | 0.2 | 0.8 5-Clouds, Dust, etc. | 1 | 7 | 8 | 0.2 | 1.4 | 1.6 | 3 | 2 | 5 | 0.6 | 0.4 | 1.0 | 4 | 0 | 4 | 1.6 | 0.0 | 1.6 | 3 | 1 | 4 | 0.4 | 0.1 | 0.5 6-Insuffic. Info. | 44 | 0 | 44 | 8.7 | 0.0 | 8.7 | 39 | 0 | 39 | 7.4 | 0.0 | 7.4 | 15 | 0 | 15 | 6.0 | 0.0 | 6.0 | 143 | 0 | 143 | 16.8 | 0.0 | 16.8 7-Psychological | 5 | 4 | 9 | 1.0 | 0.8 | 1.8 | 11 | 0 | 11 | 2.1 | 0.0 | 2.1 | 5 | 1 | 6 | 2.0 | 0.4 | 2.4 | 8 | 2 | 10 | 0.9 | 0.2 | 1.1 8-Unknown | 141 | 0 | 141 | 27.6 | 0.0 | 27.6 | 119 | 0 | 119 | 22.6 | 0.0 | 22.6 | 66 | 0 | 66 | 26.5 | 0.0 | 26.5 | 177 | 0 | 177 | 20.8 | 0.0 | 20.8 9-Other | 19 | 3 | 22 | 3.7 | 0.6 | 4.3 | 16 | 9 | 25 | 3.0 | 1.7 | 4.7 | 13 | 3 | 3 | 5.2 | 1.2 | 6.4 | 44 | 6 | 50 | 5.2 | 0.7 | 5.9 Total | 370 | 138 | 508 | 72.8 | 27.2 | 100. | 371 | 156 | 527 | 70.4 | 29.6 | 100. | 199 | 50 | 249 | 79.9 | 20.1 | 100. | 665 | 187 | 852 | 78.1 | 21.9 | 100. TABLE A82 EVALUATION OF ALL SIGHTINGS BY DURATION OF SIGHTING, 1947 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 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 6.2 | 0.0 | 6.2 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 1-Astronomical | 9 | 1 | 10 | 81.8 | 9.1 | 90.9 | 6 | 2 | 8 | 75.0 | 25.0 | 100.0 | 4 | 0 | 4 | 25.0 | 0.0 | 25.0 | 2 | 1 | 3 | 25.0 | 12.5 | 37.5 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 | 6.2 | 6.2 | 0 | 1 | 1 | 0.0 | 12.5 | 12.5 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 | 12.5 | 0.0 | 12.5 | 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 | 9 | 1 | 1 | 0.0 | 6.2 | 6.2 | 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 | 6 | 0 | 6 | 37.5 | 0.0 | 37.5 | 4 | 0 | 4 | 50.0 | 0.0 | 50.0 9-Other | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 6.2 | 0.0 | 6.2 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 Total | 10 | 1 | 11 | 90.9 | 9.1 | 100. | 6 | 2 | 8 | 75.0 | 25.0 | 100. | 14 | 2 | 16 | 87.5 | 12.5 | 100. | 6 | 2 | 8 | 75.0 | 25.0 | 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 | 20.0 | 0.0 | 20.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 0 | 4 | 6.8 | 0.0 | 6.8 1-Astronomical | 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 | 11 | 4 | 15 | 18.6 | 6.8 | 25.4 2-Aircraft | 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 | 0 | 2 | 3.4 | 0.0 | 3.4 3-Light Phenom. | 1 | 0 | 1 | 10.0 | 0.0 | 10.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 1.7 | 0.0 | 1.7 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 | 20.0 | 0.0 | 20.0 | 3 | 0 | 3 | 60.0 | 0.0 | 60.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 7 | 0 | 7 | 11.9 | 0.0 | 11.9 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 | 3 | 1 | 4 | 5.1 | 1.7 | 6.8 8-Unknown | 4 | 0 | 4 | 40.0 | 0.0 | 40.0 | 2 | 0 | 2 | 40.0 | 0.0 | 40.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 12 | 0 | 12 | 20.3 | 0.0 | 20.3 9-Other | 1 | 0 | 1 | 10.0 | 0.0 | 10.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 14 | 0 | 14 | 23.7 | 0.0 | 23.7 Total | 10 | 0 | 10 | 100.0 | 0.0 | 100.0 | 5 | 0 | 5 | 100.0 | 0.0 | 100.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 54 | 5 | 59 | 91.5 | 8.5 | 100.0 153