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

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TABLE A110 EVALUATION OF UNIT SIGHTINGS FOR ALL YEARS BY DURATION OF SIGHTING FOR MONTHS OF YEAR, FIVE SECONDS OR LESS

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 | 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 | 8.3 | 0.0 | 8.3
1-Astronomical | 3 | 9 | 12 | 20.0 | 60.0 | 80.0 | 3 | 6 | 9 | 30.0 | 60.0 | 90.0 | 4 | 6 | 10 | 33.3 | 50.0 | 83.3 | 6 | 0 | 6 | 50.0 | 0.0 | 50.0
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 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3
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 | 1 | 1 | 0.0 | 8.3 | 8.3
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 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3
7-Psychological | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 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 | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3 | 2 | 0 | 2 | 16.7 | 0.0 | 16.7
9-Other | 0 | 1 | 1 | 0.0 | 6.7 | 6.7 | 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
Total | 5 | 10 | 15 | 33.3 | 66.7 | 100. | 4 | 6 | 10 | 40.0 | 60.0 | 100. | 6 | 6 | 12 | 60.0 | 50.0 | 100. | 11 | 1 | 12 | 91.7 | 8.3 | 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 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 3.7 | 0.0 | 3.7 | 1 | 2 | 3 | 1.1 | 2.2 | 3.3 | 0 | 3 | 3 | 0.0 | 3.9 | 3.9
1-Astronomical | 5 | 2 | 7 | 26.3 | 10.5 | 36.8 | 10 | 8 | 18 | 37.0 | 29.6 | 66.6 | 36 | 18 | 54 | 39.1 | 19.5 | 58.6 | 13 | 35 | 48 | 16.9 | 45.4 | 62.3
2-Aircraft | 4 | 1 | 5 | 21.1 | 5.3 | 26.4 | 3 | 1 | 4 | 11.1 | 3.7 | 14.8 | 8 | 9 | 17 | 8.7 | 9.8 | 18.5 | 3 | 6 | 9 | 3.9 | 7.8 | 11.7
3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 1.1 | 0.0 | 1.1 | 0 | 1 | 1 | 0.0 | 1.3 | 1.3
4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 2 | 3 | 1.1 | 2.2 | 3.3 | 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 | 1 | 1 | 0.0 | 1.1 | 1.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
6-Insuffic. Info. | 3 | 0 | 3 | 15.8 | 0.0 | 15.8 | 3 | 0 | 3 | 11.1 | 0.0 | 11.1 | 2 | 0 | 2 | 2.2 | 0.0 | 2.2 | 6 | 0 | 6 | 7.8 | 0.0 | 7.8
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 | 1.3 | 0.0 | 1.3
8-Unknown | 2 | 0 | 2 | 10.5 | 0.0 | 10.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 9 | 0 | 9 | 9.8 | 0.0 | 9.8 | 6 | 0 | 6 | 7.8 | 0.0 | 7.8
9-Other | 2 | 0 | 2 | 10.5 | 0.0 | 10.5 | 1 | 0 | 1 | 3.7 | 0.0 | 3.7 | 2 | 0 | 2 | 2.2 | 0.0 | 2.2 | 2 | 1 | 3 | 2.6 | 1.3 | 3.9
Total | 16 | 3 | 19 | 84.2 | 15.8 | 100. | 18 | 9 | 27 | 66.7 | 33.3 | 100. | 60 | 32 | 92 | 65.2 | 34.8 | 100. | 31 | 46 | 77 | 40.2 | 59.8 | 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 | 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
1-Astronomical | 11 | 1 | 12 | 55.0 | 5.0 | 60.0 | 12 | 5 | 17 | 42.9 | 17.9 | 60.8 | 7 | 7 | 14 | 33.3 | 33.3 | 66.6 | 11 | 9 | 20 | 47.8 | 39.1 | 86.9
2-Aircraft | 1 | 2 | 3 | 5.0 | 10.0 | 15.0 | 1 | 3 | 4 | 3.6 | 10.7 | 14.3 | 2 | 1 | 3 | 9.5 | 4.8 | 14.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 2.6 | 3.6 | 1 | 0 | 1 | 4.8 | 0.0 | 4.8 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
4-Birds | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 1 | 2 | 3.6 | 3.6 | 7.2 | 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 | 10.0 | 0.0 | 10.0 | 1 | 0 | 1 | 3.6 | 0.0 | 3.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 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 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
8-Unknown | 2 | 0 | 2 | 10.0 | 0.0 | 10.0 | 3 | 0 | 3 | 10.7 | 0.0 | 10.7 | 2 | 0 | 2 | 9.5 | 0.0 | 9.5 | 3 | 0 | 3 | 13.0 | 0.0 | 13.0
9-Other | 0 | 1 | 1 | 0.0 | 5.0 | 5.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 4.8 | 0.0 | 4.8 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
Total | 16 | 4 | 20 | 80.0 | 20.0 | 100. | 18 | 10 | 28 | 64.3 | 35.7 | 100. | 13 | 8 | 21 | 61.9 | 38.1 | 100. | 14 | 9 | 23 | 60.9 | 39.1 | 100.

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