Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

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TABLE A58 EVALUATION OF ALL SIGHTINGS FOR 1952 BY SIGHTING RELIABILITY GROUPS, MILITARY OBSERVERS

Evaluation | EXCELLENT | GOOD | DOUBTFUL | POOR
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 | 8 | 7 | 15 | 6.8 | 6.0 | 12.8 | 34 | 29 | 63 | 8.9 | 7.6 | 16.5 | 21 | 18 | 39 | 10.9 | 9.4 | 20.3 | 10 | 8 | 18 | 14.3 | 11.4 | 25.7
1-Astronomical | 11 | 8 | 19 | 9.4 | 6.8 | 16.2 | 53 | 22 | 75 | 13.9 | 5.8 | 19.7 | 37 | 8 | 45 | 19.3 | 4.2 | 23.5 | 11 | 2 | 13 | 15.7 | 2.9 | 18.6
2-Aircraft | 21 | 12 | 33 | 18.0 | 10.3 | 28.3 | 25 | 28 | 53 | 6.5 | 7.3 | 13.8 | 18 | 10 | 28 | 9.4 | 5.2 | 14.6 | 3 | 3 | 6 | 4.3 | 4.3 | 8.6
3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 1 | 4 | 0.8 | 0.3 | 1.1 | 1 | 0 | 1 | 0.5 | 0.0 | 0.5 | 2 | 0 | 2 | 2.9 | 0.0 | 2.9
4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 0 | 3 | 0.8 | 0.0 | 0.8 | 4 | 0 | 4 | 2.1 | 0.0 | 2.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 7 | 1 | 8 | 1.8 | 0.3 | 2.1 | 2 | 1 | 3 | 1.0 | 0.5 | 1.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
6-Insuffic. Info. | 2 | 0 | 2 | 1.7 | 0.0 | 1.7 | 8 | 0 | 8 | 2.1 | 0.0 | 2.1 | 8 | 0 | 8 | 4.2 | 0.0 | 4.2 | 9 | 0 | 9 | 12.9 | 0.0 | 12.9
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 | 0 | 2 | 2 | 0.0 | 2.9 | 2.9
8-Unknown | 42 | 0 | 42 | 35.9 | 0.0 | 35.9 | 143 | 0 | 143 | 37.4 | 0.0 | 37.4 | 53 | 0 | 53 | 27.6 | 0.0 | 27.6 | 10 | 0 | 10 | 14.3 | 0.0 | 14.3
9-Other | 6 | 0 | 6 | 5.1 | 0.0 | 5.1 | 23 | 2 | 25 | 6.0 | 0.5 | 6.5 | 11 | 0 | 11 | 5.7 | 0.0 | 5.7 | 0 | 10 | 10 | 0.0 | 14.3 | 14.3
Total | 90 | 27 | 117 | 76.9 | 23.1 | 100. | 249 | 83 | 332 | 78.3 | 21.7 | 100. | 155 | 37 | 192 | 80.7 | 19.3 | 100. | 45 | 25 | 70 | 64.3 | 35.7 | 100.

TABLE A59 EVALUATION OF ALL SIGHTINGS FOR 1952 BY SIGHTING RELIABILITY GROUPS, CIVILIAN OBSERVERS

Evaluation | EXCELLENT | GOOD | DOUBTFUL | POOR
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 | 4 | 7 | 6.5 | 8.7 | 15.2 | 43 | 23 | 66 | 10.5 | 5.6 | 16.1 | 40 | 42 | 82 | 7.0 | 7.3 | 14.3 | 28 | 13 | 41 | 12.4 | 5.8 | 18.2
1-Astronomical | 6 | 0 | 6 | 13.1 | 0.0 | 13.1 | 57 | 28 | 85 | 13.9 | 6.8 | 20.7 | 72 | 29 | 101 | 12.5 | 5.0 | 17.5 | 13 | 23 | 36 | 5.8 | 10.2 | 16.0
2-Aircraft | 6 | 4 | 10 | 13.1 | 8.7 | 21.8 | 57 | 66 | 123 | 13.9 | 16.1 | 30.0 | 94 | 90 | 184 | 16.3 | 15.7 | 32.0 | 26 | 19 | 45 | 11.5 | 8.4 | 19.9
3-Light Phenom. | 2 | 0 | 2 | 4.3 | 0.0 | 4.3 | 4 | 7 | 11 | 1.0 | 1.7 | 2.7 | 11 | 9 | 20 | 1.9 | 1.6 | 3.5 | 3 | 0 | 3 | 1.3 | 0.0 | 1.3
4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 1 | 2 | 0.2 | 0.2 | 0.4 | 3 | 3 | 6 | 0.5 | 1.0 | 1.5 | 2 | 1 | 3 | 0.9 | 0.4 | 1.3
5-Clouds, Dust, etc. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 9 | 10 | 0.2 | 2.2 | 2.4 | 2 | 2 | 4 | 0.3 | 0.3 | 0.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
6-Insuffic. Info. | 2 | 0 | 2 | 4.3 | 0.0 | 4.3 | 14 | 0 | 14 | 3.4 | 0.0 | 3.4 | 71 | 0 | 71 | 12.3 | 0.0 | 12.3 | 52 | 0 | 52 | 23.0 | 0.0 | 23.0
7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 0 | 2 | 0.5 | 0.0 | 0.5 | 18 | 4 | 22 | 3.1 | 0.7 | 3.8 | 6 | 1 | 7 | 2.7 | 0.4 | 3.1
8-Unknown | 18 | 0 | 18 | 39.4 | 0.0 | 39.4 | 85 | 0 | 86 | 20.7 | 0.0 | 20.7 | 67 | 0 | 67 | 11.7 | 0.0 | 11.7 | 37 | 0 | 37 | 16.4 | 0.0 | 16.4
9-Other | 1 | 0 | 1 | 2.2 | 0.0 | 2.2 | 8 | 4 | 12 | 2.0 | 1.0 | 3.0 | 16 | 2 | 18 | 2.8 | 0.3 | 3.1 | 0 | 2 | 2 | 0.0 | 0.9 | 0.9
Total | 38 | 8 | 46 | 82.6 | 17.4 | 100. | 272 | 138 | 410 | 66.3 | 33.7 | 100. | 394 | 181 | 575 | 68.5 | 31.5 | 100. | 167 | 59 | 226 | 73.9 | 26.1 | 100.

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