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

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TABLE A76 EVALUATION OF OBJECT SIGHTINGS FOR ALL YEARS BY NUMBER OF OBJECTS PER SIGHTING. ONE OBJECT

Evaluation | TOTAL | 1947 | 1948 | 1949
Number | Per Cent | Number | Per Cent
Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total
0-Balloon | 176 | 109 | 285 | 10.8 | 6.7 | 17.5 | 10 | 10 | 20 | 8.7 | 8.7 | 17.4
1-Astronomical | 248 | 178 | 426 | 15.2 | 10.9 | 26.1 | 25 | 19 | 44 | 21.7 | 16.5 | 38.2
2-Aircraft | 174 | 143 | 317 | 10.6 | 8.7 | 19.3 | 9 | 4 | 13 | 7.8 | 3.5 | 11.3
3-Light Phenom. | 17 | 7 | 24 | 1.0 | 0.4 | 1.4 | 1 | 0 | 1 | 0.9 | 0.0 | 0.9
4-Birds | 1 | 1 | 2 | 0.1 | 0.1 | 0.2 | 1 | 1 | 2 | 0.9 | 0.9 | 1.8
5-Clouds, Dust, etc. | 3 | 7 | 10 | 0.2 | 0.4 | 0.6 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
6-Insuffic. Info. | 169 | 0 | 169 | 10.3 | 0.0 | 10.3 | 14 | 0 | 14 | 12.2 | 0.0 | 12.2
7-Psychological | 28 | 3 | 31 | 1.7 | 0.2 | 1.9 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
8-Unknown | 297 | 0 | 297 | 18.2 | 0.0 | 18.2 | 14 | 0 | 14 | 12.2 | 0.0 | 12.2
9-Other | 57 | 18 | 75 | 3.5 | 1.1 | 4.6 | 3 | 4 | 7 | 2.6 | 3.5 | 6.1
Total | 1170 | 466 | 1636 | 71.5 | 28.5 | 100 | 77 | 38 | 115 | 67.0 | 33.0 | 100

Evaluation | 1950 | 1951 | 1952 |
Number | Per Cent | Number | Per Cent
Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total
0-Balloon | 18 | 4 | 22 | 12.9 | 2.9 | 15.8 | 125 | 90 | 215 | 11.5 | 8.3 | 19.8
1-Astronomical | 24 | 14 | 38 | 17.1 | 10.0 | 27.1 | 154 | 76 | 230 | 14.1 | 7.0 | 21.1
2-Aircraft | 14 | 7 | 21 | 10.0 | 5.0 | 15.0 | 122 | 118 | 240 | 11.2 | 10.8 | 22.0
3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 13 | 6 | 19 | 1.2 | 0.6 | 1.8
4-Birds | 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 | 3 | 7 | 10 | 0.3 | 0.6 | 0.9
6-Insuffic. Info. | 21 | 0 | 21 | 15.0 | 0.0 | 15.0 | 103 | 0 | 103 | 9.5 | 0.0 | 9.5
7-Psychological | 2 | 0 | 2 | 1.4 | 0.0 | 1.4 | 22 | 2 | 24 | 2.0 | 0.2 | 2.2
8-Unknown | 31 | 0 | 31 | 22.1 | 0.0 | 22.1 | 200 | 0 | 200 | 18.4 | 0.0 | 18.4
9-Other | 3 | 2 | 5 | 2.1 | 1.4 | 3.5 | 36 | 12 | 48 | 3.3 | 1.1 | 4.4
Total | 113 | 27 | 140 | 80.7 | 19.3 | 100 | 778 | 311 | 1089 | 71.4 | 28.6 | 100

TABLE A77 EVALUATION OF OBJECT SIGHTINGS FOR ALL YEARS BY NUMBER OF OBJECTS PER SIGHTING, TWO OBJECTS

Evaluation | TOTAL | 1947 | 1948 | 1949
Number | Per Cent | Number | Per Cent
Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total
0-Balloon | 17 | 14 | 31 | 8.1 | 7.1 | 15.8 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1
1-Astronomical | 6 | 11 | 17 | 3.1 | 5.6 | 8.7 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
2-Aircraft | 40 | 31 | 71 | 20.4 | 15.8 | 36.2 | 3 | 0 | 3 | 33.3 | 0.0 | 33.3
3-Light Phenom. | 4 | 2 | 6 | 2.0 | 1.0 | 3.0 | 1 | 0 | 1 | 11.1 | 0.0 | 11.1
4-Birds | 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
6-Insuffic. Info. | 18 | 0 | 18 | 9.2 | 0.0 | 9.2 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
7-Psychological | 3 | 1 | 4 | 1.5 | 0.5 | 2.0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0
8-Unknown | 37 | 0 | 37 | 18.9 | 0.0 | 18.9 | 1 | 0 | 1 | 14.3 | 0.0 | 14.3
9-Other | 9 | 3 | 12 | 4.6 | 1.5 | 6.1 | 2 | 0 | 2 | 28.6 | 0.0 | 28.6
Total | 134 | 62 | 196 | 68.4 | 31.6 | 100 | 6 | 3 | 9 | 66.7 | 33.3 | 100

Evaluation | 1950 | 1951 | 1952 |
Number | Per Cent | Number | Per Cent
Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total | Certain | Doubtful | Total
0-Balloon | 1 | 0 | 1 | 10.0 | 0.0 | 10.0 | 14 | 14 | 28 | 9.0 | 9.0 | 18.0
1-Astronomical | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 2 | 6 | 8 | 1.3 | 3.9 | 5.2
2-Aircraft | 4 | 1 | 5 | 40.0 | 10.0 | 50.0 | 30 | 28 | 58 | 19.4 | 18.1 | 37.5
3-Light Phenom. | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 2 | 5 | 1.9 | 1.3 | 3.2
4-Birds | 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
6-Insuffic. Info. | 1 | 0 | 1 | 10.0 | 0.0 | 10.0 | 17 | 0 | 17 | 11.0 | 0.0 | 11.0
7-Psychological | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 3 | 1 | 4 | 1.9 | 0.6 | 2.5
8-Unknown | 2 | 0 | 2 | 20.0 | 0.0 | 20.0 | 31 | 0 | 31 | 20.0 | 0.0 | 20.0
9-Other | 1 | 0 | 1 | 10.0 | 0.0 | 10.0 | 4 | 0 | 4 | 2.6 | 0.0 | 2.6
Total | 9 | 1 | 10 | 90.0 | 10.0 | 100 | 104 | 51 | 155 | 67.1 | 32.9 | 100

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