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

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TABLE A23 EVALUATION OF OBJECT SIGHTINGS BY MONTH OF YEAR, 1951

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 | 2 | 1 | 3 | 11.1 | 5.6 | 16.7 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
1-Astronomical | 1 | 2 | 3 | 5.6 | 11.1 | 16.7 | 0 | 2 | 2 | 0.0 | 22.2 | 22.2 | 1 | 1 | 2 | 16.7 | 16.7 | 33.4 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
2-Aircraft | 0 | 2 | 2 | 0.0 | 11.1 | 11.1 | 0 | 3 | 3 | 0.0 | 33.3 | 33.3 | 0 | 1 | 1 | 0.0 | 16.7 | 16.7 | 1 | 0 | 1 | 33.3 | 0.0 | 33.3
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 | 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. | 5 | 0 | 5 | 27.8 | 0.0 | 27.8 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 0 | 2 | 66.7 | 0.0 | 66.7
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 | 4 | 0 | 4 | 22.2 | 0.0 | 22.2 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1 | 3 | 0 | 3 | 50.0 | 0.0 | 50.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
9-Other | 1 | 0 | 1 | 5.6 | 0.0 | 5.6 | 2 | 0 | 2 | 22.2 | 0.0 | 22.2 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
Total | 13 | 5 | 18 | 72.2 | 27.8 | 100. | 4 | 5 | 9 | 44.4 | 55.6 | 100. | 4 | 2 | 6 | 66.7 | 33.3 | 100. | 3 | 0 | 3 | 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 | 1 | 0 | 1 | 25.0 | 0.0 | 25.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 1 | 2 | 6.2 | 6.2 | 12.4
1-Astronomical | 1 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 2 | 3 | 12.5 | 25.0 | 37.5 | 6 | 0 | 0 | 0.0 | 0.0 | 0.0
2-Aircraft | 1 | 0 | 1 | 25.0 | 0.0 | 25.0 | 1 | 0 | 1 | 100.0 | 0.0 | 100.0 | 1 | 0 | 1 | 12.5 | 0.0 | 12.5 | 1 | 0 | 1 | 6.2 | 4.0 | 6.2
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 | 1 | 1 | 2 | 6.2 | 6.2 | 12.4
4-Birds | 0 | 1 | 1 | 0.0 | 25.0 | 25.0 | 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 | 3 | 0 | 3 | 18.8 | 0.0 | 18.8
7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 1 | 1 | 0.0 | 12.5 | 12.5 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
8-Unknown | 1 | 0 | 1 | 25.0 | 0.0 | 25.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 0 | 2 | 25.0 | 0.0 | 25.0 | 7 | 0 | 7 | 43.8 | 0.0 | 43.8
9-Other | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 12.5 | 0.0 | 12.5 | 1 | 0 | 1 | 6.2 | 0.0 | 6.2
Total | 3 | 1 | 4 | 75.0 | 25.0 | 100. | 1 | 0 | 1 | 100.0 | 0.0 | 100. | 5 | 3 | 8 | 62.5 | 37.5 | 100. | 14 | 2 | 16 | 87.5 | 12.5 | 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 | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 1 | 0 | 1 | 5.3 | 0.0 | 5.3 | 0 | 1 | 1 | 0.0 | 8.3 | 8.3 | 1 | 0 | 1 | 10.0 | 0.0 | 10.0
1-Astronomical | 2 | 1 | 3 | 13.3 | 6.7 | 20.0 | 5 | 1 | 6 | 26.3 | 5.3 | 31.6 | 4 | 4 | 8 | 33.3 | 33.3 | 66.6 | 2 | 1 | 3 | 20.0 | 10.0 | 30.0
2-Aircraft | 1 | 0 | 1 | 6.7 | 0.0 | 6.7 | 4 | 0 | 4 | 21.1 | 0.0 | 21.1 | 2 | 0 | 2 | 16.7 | 0.0 | 16.7 | 3 | 0 | 3 | 30.0 | 0.0 | 30.0
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. | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 8.3 | 0.0 | 8.3 | 1 | 0 | 1 | 10.0 | 0.0 | 10.0
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 | 10.0 | 0.0 | 10.0
8-Unknown | 6 | 0 | 6 | 40.0 | 0.0 | 40.0 | 8 | 0 | 8 | 42.1 | 0.0 | 42.1 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 1 | 0 | 1 | 10.0 | 0.0 | 10.0
9-Other | 2 | 0 | 2 | 13.3 | 0.0 | 13.3 | 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 | 10.0
Total | 14 | 1 | 15 | 93.3 | 6.7 | 100. | 18 | 1 | 19 | 94.7 | 5.3 | 100. | 7 | 5 | 12 | 58.3 | 41.7 | 100. | 9 | 1 | 10 | 90.0 | 10.0 | 100.

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