Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)
CIA-UAP-015 · page 116 of 312
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TABLE A1 EVALUATION OF ALL SIGHTINGS BY YEARS Evaluation | ALL YEARS | 1947 | 1948 | 1949 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 | 270 | 180 | 450 | 8.4 | 5.6 | 14.0 | 7 | 0 | 7 | 6.0 | 0.0 | 6.0 | 17 | 20 | 37 | 8.3 | 4.5 | 18.1 | 16 | 5 | 21 | 4.1 | 1.2 | 5.3 1-Astronomical | 476 | 341 | 817 | 14.9 | 10.6 | 25.5 | 52 | 8 | 40 | 27.4 | 6.6 | 34.0 | 36 | 39 | 75 | 10.5 | 19.0 | 36.5 | 74 | 132 | 206 | 18.7 | 33.5 | 52.2 2-Aircraft | 354 | 288 | 642 | 11.1 | 9.0 | 20.1 | 2 | 2 | 4 | 1.7 | 1.7 | 3.4 | 16 | 5 | 21 | 7.8 | 2.4 | 10.2 | 31 | 26 | 57 | 7.8 | 6.1 | 14.4 3-Light Phenom. | 32 | 24 | 56 | 1.0 | 0.8 | 1.8 | 2 | 0 | 2 | 1.7 | 0.0 | 1.7 | 2 | 6 | 8 | 1.0 | 2.9 | 3.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 4-Birds | 19 | 10 | 29 | 0.6 | 0.3 | 0.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 3 | 5 | 1.0 | 1.5 | 2.5 | 4 | 1 | 5 | 1.1 | 0.2 | 1.3 5-Clouds, Dust, etc. | 12 | 13 | 25 | 0.4 | 0.4 | 2.8 | 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. | 298 | 0 | 298 | 9.3 | 0.0 | 9.3 | 14 | 0 | 14 | 12.0 | 0.0 | 12.0 | 19 | 0 | 19 | 9.3 | 0.0 | 9.3 | 36 | 0 | 36 | 9.1 | 0.0 | 9.1 7-Psychological | 38 | 10 | 48 | 1.2 | 0.3 | 1.5 | 3 | 2 | 5 | 2.6 | 1.7 | 4.3 | 1 | 0 | 1 | 0.5 | 0.0 | 0.5 | 3 | 0 | 3 | 0.7 | 0.0 | 0.7 8-Unknown | 689 | 0 | 689 | 21.5 | 0.0 | 21.5 | 28 | 0 | 28 | 23.9 | 0.0 | 23.9 | 27 | 0 | 27 | 13.2 | 0.1 | 13.3 | 56 | 0 | 56 | 14.2 | 0.0 | 14.2 9-Other | 112 | 35 | 147 | 3.5 | 1.1 | 4.6 | 14 | 0 | 14 | 14.5 | 0.0 | 14.5 | 4 | 8 | 12 | 1.0 | 3.9 | 5.8 | 11 | 0 | 11 | 2.8 | 0.0 | 2.8 Total | 2300 | 901 | 3201 | 71.9 | 28.1 | 100 | 105 | 12 | 117 | 89.8 | 10.2 | 100 | 124 | 81 | 205 | 66.5 | 39.5 | 100 | 231 | 164 | 395 | 58.5 | 41.5 | 100 Evaluation | 1950 | 1951 | 1952 | 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 | 33 | 1 | 40 | 10.8 | 2.3 | 13.1 | 10 | 4 | 14 | 6.2 | 2.5 | 8.7 | 187 | 144 | 331 | 9.3 | 7.1 | 16.4 | | | | | | 1-Astronomical | 49 | 25 | 74 | 16.0 | 8.2 | 24.2 | 25 | 17 | 42 | 15.6 | 10.6 | 26.2 | 260 | 120 | 380 | 12.9 | 6.0 | 18.9 | | | | | | 2-Aircraft | 39 | 15 | 54 | 12.7 | 4.9 | 17.6 | 16 | 8 | 24 | 10.0 | 5.0 | 15.0 | 250 | 232 | 482 | 12.4 | 11.5 | 23.9 | | | | | | 3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 1 | 3 | 1.3 | 0.7 | 2.0 | 26 | 17 | 43 | 1.3 | 0.8 | 2.1 | | | | | | 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 0.7 | 0.7 | 13 | 5 | 18 | 0.6 | 0.2 | 0.8 | | | | | | 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 12 | 13 | 25 | 0.6 | 0.6 | 1.2 | | | | | | 6-Insuffic. Info. | 49 | 0 | 49 | 16.0 | 0.0 | 16.0 | 14 | 0 | 14 | 8.7 | 0.0 | 8.7 | 166 | 0 | 166 | 8.2 | 0.0 | 8.2 | | | | | | 7-Psychological | 4 | 0 | 4 | 1.3 | 0.0 | 1.3 | 1 | 1 | 2 | 0.7 | 0.7 | 1.4 | 26 | 7 | 33 | 1.3 | 0.3 | 1.6 | | | | | | 8-Unknown | 71 | 0 | 71 | 23.2 | 0.0 | 23.2 | 52 | 0 | 52 | 32.5 | 0.0 | 32.5 | 455 | 0 | 455 | 22.6 | 0.0 | 22.6 | | | | | | 9-Other | 7 | 7 | 14 | 2.3 | 2.3 | 4.6 | 8 | 0 | 8 | 5.0 | 0.0 | 5.0 | 65 | 20 | 85 | 3.2 | 1.0 | 4.2 | | | | | | Total | 252 | 54 | 306 | 82.3 | 17.7 | 100 | 128 | 32 | 160 | 80.0 | 20.0 | 100 | 1460 | 558 | 2018 | 72.4 | 27.6 | 100 | | | | | | TABLE A2 EVALUATION OF UNIT SIGHTINGS BY YEARS Evaluation | ALL YEARS | 1947 | 1948 | 1949 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 | 228 | 151 | 379 | 8.9 | 5.9 | 14.8 | 7 | 0 | 7 | 7.2 | 0.0 | 7.2 | 14 | 10 | 24 | 9.2 | 6.5 | 15.7 | 11 | 3 | 14 | 4.7 | 1.3 | 6.0 1-Astronomical | 383 | 256 | 639 | 15.0 | 10.0 | 25.0 | 19 | 8 | 27 | 19.6 | 8.2 | 27.8 | 28 | 27 | 55 | 18.3 | 17.6 | 35.9 | 34 | 80 | 114 | 14.4 | 33.8 | 48.2 2-Aircraft | 292 | 235 | 527 | 11.4 | 9.2 | 20.6 | 2 | 2 | 4 | 2.1 | 2.1 | 4.2 | 15 | 4 | 19 | 9.8 | 2.6 | 12.4 | 18 | 12 | 30 | 7.6 | 5.1 | 12.7 3-Light Phenom. | 32 | 21 | 53 | 1.3 | 0.8 | 2.1 | 2 | 0 | 2 | 2.1 | 0.0 | 2.1 | 2 | 3 | 5 | 1.3 | 2.0 | 3.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 4-Birds | 13 | 10 | 23 | 0.5 | 0.4 | 0.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 3 | 5 | 1.3 | 2.0 | 3.3 | 2 | 1 | 3 | 0.8 | 0.4 | 1.2 5-Clouds, Dust, etc. | 3 | 7 | 10 | 0.1 | 0.3 | 0.4 | 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. | 261 | 0 | 261 | 10.2 | 0.0 | 10.2 | 12 | 0 | 12 | 12.4 | 0.0 | 12.4 | 17 | 0 | 17 | 11.1 | 0.0 | 11.1 | 33 | 0 | 33 | 14.0 | 0.0 | 14.0 7-Psychological | 36 | 9 | 45 | 1.4 | 0.4 | 1.8 | 3 | 2 | 5 | 3.1 | 2.1 | 5.2 | 1 | 0 | 1 | 0.7 | 0.0 | 0.7 | 3 | 0 | 3 | 1.3 | 0.0 | 1.3 8-Unknown | 497 | 0 | 497 | 19.5 | 0.0 | 19.5 | 24 | 0 | 24 | 24.1 | 0.0 | 24.1 | 16 | 0 | 16 | 10.5 | 0.0 | 10.5 | 33 | 0 | 33 | 14.0 | 0.0 | 14.0 9-Other | 92 | 28 | 120 | 3.6 | 1.1 | 4.7 | 16 | 0 | 16 | 16.5 | 0.0 | 16.5 | 4 | 7 | 11 | 2.6 | 4.6 | 7.2 | 6 | 0 | 6 | 2.5 | 0.0 | 2.5 Total | 1837 | 717 | 2554 | 71.9 | 28.1 | 100 | 85 | 12 | 97 | 87.6 | 12.4 | 100 | 99 | 54 | 153 | 64.7 | 35.3 | 100 | 140 | 96 | 236 | 59.4 | 40.6 | 100 Evaluation | 1950 | 1951 | 1952 | 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 | 22 | 5 | 27 | 10.5 | 2.4 | 12.9 | 9 | 3 | 12 | 6.6 | 2.2 | 8.8 | 165 | 130 | 295 | 9.6 | 7.5 | 17.1 | | | | | | 1-Astronomical | 42 | 18 | 60 | 20.1 | 8.6 | 28.7 | 21 | 14 | 35 | 15.3 | 10.2 | 25.5 | 239 | 109 | 348 | 13.9 | 6.3 | 20.2 | | | | | | 2-Aircraft | 30 | 11 | 41 | 14.3 | 5.3 | 19.6 | 16 | 8 | 24 | 11.7 | 5.8 | 17.5 | 211 | 198 | 409 | 12.3 | 11.5 | 23.8 | | | | | | 3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 1 | 3 | 1.5 | 0.7 | 2.2 | 26 | 17 | 43 | 1.5 | 1.0 | 2.5 | | | | | | 4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 0.7 | 0.7 | 9 | 5 | 14 | 0.5 | 0.3 | 0.8 | | | | | | 5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 7 | 10 | 0.2 | 0.4 | 0.6 | | | | | | 6-Insuffic. Info. | 26 | 0 | 26 | 12.4 | 0.0 | 12.4 | 14 | 0 | 14 | 10.2 | 0.0 | 10.2 | 159 | 0 | 159 | 9.2 | 0.0 | 9.2 | | | | | | 7-Psychological | 2 | 0 | 2 | 1.0 | 0.0 | 1.0 | 1 | 1 | 2 | 0.7 | 0.7 | 1.4 | 26 | 6 | 32 | 1.5 | 0.3 | 1.8 | | | | | | 8-Unknown | 42 | 0 | 42 | 20.1 | 0.0 | 20.1 | 38 | 0 | 38 | 21.7 | 0.0 | 21.7 | 344 | 0 | 344 | 20.0 | 0.0 | 20.0 | | | | | | 9-Other | 6 | 5 | 11 | 2.9 | 2.4 | 5.3 | 8 | 0 | 8 | 5.8 | 0.0 | 5.8 | 52 | 16 | 68 | 3.0 | 0.9 | 3.9 | | | | | | Total | 170 | 39 | 209 | 81.4 | 18.6 | 100 | 109 | 28 | 137 | 19.6 | 20.4 | 100 | 1234 | 488 | 1722 | 71.7 | 28.3 | 100 | | | | | | 107