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

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TABLE A115 EVALUATION OF UNIT SIGHTINGS FOR ALL YEARS BY DURATION OF SIGHTING FOR MONTHS OF YEAR, SIX TO THIRTY MINUTES

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 | 1 | 2 | 7.1 | 7.1 | 14.2 | 3 | 0 | 3 | 27.3 | 0.0 | 27.3 | 1 | 1 | 2 | 8.3 | 8.3 | 16.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
1-Astronomical | 3 | 0 | 3 | 21.4 | 0.0 | 21.4 | 1 | 0 | 1 | 9.1 | 0.0 | 9.1 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3 | 2 | 0 | 2 | 15.4 | 0.0 | 15.4
2-Aircraft | 2 | 1 | 3 | 14.3 | 7.1 | 21.4 | 0 | 2 | 2 | 0.0 | 18.2 | 18.2 | 1 | 2 | 3 | 8.3 | 16.7 | 25.0 | 4 | 0 | 4 | 30.8 | 0.0 | 30.8
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 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 7.7 | 0.0 | 7.7
7-Psychological | 1 | 0 | 1 | 7.1 | 0.0 | 7.1 | 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
8-Unknown | 4 | 0 | 4 | 28.6 | 0.0 | 28.6 | 2 | 0 | 2 | 18.2 | 0.0 | 18.2 | 5 | 0 | 5 | 41.5 | 0.0 | 41.5 | 6 | 0 | 6 | 46.2 | 0.0 | 46.2
9-Other | 1 | 0 | 1 | 7.1 | 0.0 | 7.1 | 3 | 0 | 3 | 27.3 | 0.0 | 27.3 | 0 | 1 | 1 | 0.0 | 8.3 | 8.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
Total | 12 | 2 | 14 | 85.7 | 14.3 | 100 | 9 | 2 | 11 | 81.8 | 18.2 | 100 | 8 | 4 | 12 | 66.7 | 33.3 | 100 | 13 | 0 | 13 | 100.0 | 0.0 | 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 | 7 | 2 | 9 | 24.1 | 6.9 | 31.0 | 7 | 3 | 10 | 18.9 | 8.1 | 27.0 | 24 | 12 | 36 | 20.0 | 10.0 | 30.0 | 17 | 13 | 30 | 19.5 | 14.9 | 34.4
1-Astronomical | 2 | 1 | 3 | 6.9 | 3.4 | 10.3 | 2 | 0 | 2 | 5.4 | 0.0 | 5.4 | 7 | 4 | 11 | 5.8 | 3.3 | 9.1 | 8 | 2 | 10 | 9.2 | 2.3 | 11.5
2-Aircraft | 3 | 2 | 5 | 10.3 | 6.9 | 17.2 | 5 | 3 | 8 | 13.5 | 8.1 | 21.6 | 16 | 8 | 24 | 13.3 | 6.7 | 20.0 | 6 | 11 | 17 | 6.9 | 12.6 | 19.5
3-Light Phenom. | 3 | 0 | 3 | 10.3 | 0.0 | 10.3 | 1 | 0 | 1 | 2.7 | 0.0 | 2.7 | 3 | 2 | 5 | 2.5 | 1.7 | 4.2 | 4 | 0 | 4 | 4.6 | 0.0 | 4.6
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. | 1 | 0 | 1 | 3.4 | 0.0 | 3.4 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 1.1 | 1.1
6-Insuffic. Info. | 3 | 0 | 3 | 10.3 | 0.0 | 10.3 | 3 | 0 | 3 | 8.1 | 0.0 | 8.1 | 16 | 0 | 16 | 13.3 | 0.0 | 13.3 | 6 | 0 | 6 | 6.9 | 0.0 | 6.9
7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 0 | 4 | 10.8 | 0.0 | 10.8 | 1 | 0 | 1 | 0.8 | 0.0 | 0.8 | 2 | 0 | 2 | 2.3 | 0.0 | 2.3
8-Unknown | 2 | 0 | 2 | 6.9 | 0.0 | 6.9 | 9 | 0 | 9 | 24.3 | 0.0 | 24.3 | 22 | 0 | 22 | 18.3 | 0.0 | 18.3 | 12 | 0 | 12 | 13.8 | 0.0 | 13.8
9-Other | 1 | 2 | 3 | 3.4 | 6.9 | 10.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 4 | 1 | 5 | 3.3 | 0.8 | 4.1 | 4 | 1 | 5 | 4.6 | 1.1 | 5.7
Total | 22 | 7 | 29 | 75.9 | 24.1 | 100 | 31 | 6 | 37 | 83.8 | 16.2 | 100 | 93 | 27 | 120 | 77.5 | 22.5 | 100 | 59 | 28 | 87 | 67.8 | 32.2 | 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 | 3 | 2 | 5 | 10.0 | 6.7 | 16.7 | 0 | 6 | 6 | 0.0 | 30.0 | 30.0 | 2 | 4 | 6 | 8.7 | 17.4 | 26.1 | 2 | 1 | 3 | 8.0 | 4.0 | 12.0
1-Astronomical | 0 | 2 | 2 | 0.0 | 6.7 | 6.7 | 1 | 2 | 3 | 5.0 | 10.0 | 15.0 | 2 | 3 | 5 | 8.7 | 13.0 | 21.7 | 5 | 1 | 6 | 20.0 | 4.0 | 24.0
2-Aircraft | 1 | 8 | 9 | 3.3 | 26.7 | 30.0 | 1 | 2 | 3 | 5.0 | 10.0 | 15.0 | 0 | 3 | 3 | 0.0 | 13.0 | 13.0 | 1 | 2 | 3 | 4.0 | 8.0 | 12.0
3-Light Phenom. | 1 | 1 | 2 | 3.3 | 3.3 | 6.6 | 1 | 2 | 3 | 5.0 | 10.0 | 15.0 | 1 | 1 | 2 | 4.3 | 4.3 | 8.6 | 1 | 0 | 1 | 4.0 | 0.0 | 4.0
4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 5.0 | 5.0 | 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. | 3 | 0 | 3 | 10.0 | 0.0 | 10.0 | 1 | 0 | 1 | 5.0 | 0.0 | 5.0 | 1 | 0 | 1 | 4.3 | 0.0 | 4.3 | 2 | 0 | 2 | 8.0 | 0.0 | 8.0
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 | 1 | 0 | 1 | 4.0 | 0.0 | 4.0
8-Unknown | 7 | 0 | 7 | 23.3 | 0.0 | 23.3 | 3 | 0 | 3 | 15.0 | 0.0 | 15.0 | 6 | 0 | 6 | 26.1 | 0.0 | 26.1 | 8 | 0 | 8 | 32.0 | 0.0 | 32.0
9-Other | 1 | 1 | 2 | 3.3 | 3.3 | 6.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 4.0 | 0.0 | 4.0
Total | 16 | 14 | 30 | 53.3 | 46.7 | 100 | 7 | 13 | 20 | 35.0 | 65.0 | 100 | 12 | 11 | 23 | 52.2 | 47.8 | 100 | 21 | 4 | 25 | 84.0 | 16.0 | 100

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