CIA-UAP-015, Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

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I TABLE OF CONTENTS
I SUMMARY. vii
I INTRODUCTION
ORIGIN AND NATURE OF DATA 3
I REDUCTION OF DATA TO MECHANIZED COMPUTATION FORM 4
I Questionnaire . 4
Coding System and Work Sheet 6
Identification of Working Papers. 7
Evaluation of Individual Reports 10
I ANALYSIS OF THE DATA. 14
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Frequency and Percentage Distributions by Characteristics 14
Graphical Presentation . 16
Advanced Study of the Data 16
Position of the Sun Relative to the Observer 16
Statistical Chi Square Test 60
The "Flying Saucer" Model 76
I CONCLUSIONS 94
I APPENDIX A. TABULATION OF FREQUENCY AND PERCENTAGE
DISTRIBUTIONS BY CHARACTERISTICS 95
APPENDIX B. WORKING PAPER FORMS 255
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LIST OF ILLUSTRATIONS
Frequency of Sightings by Year for Object, Unit, and All Sightings 17
Distribution of Evaluations of Object, Unit, and All Sightings for All Years 18
Distribution of Object Sightings by Evaluation for All Years With Comparisons
of Each Year for Each Evaluation Group • 19
Distribution of Object Sightings by Evaluation for All Years and Each Year 20
Distribution of Object Sightings by Evaluation Within Months for All Years 21
Distribution of Object Sightings by Certain and Doubtful Evaluations for
All Years and Each Year • 22
Frequency of Object Sightings and Unknown Object Evaluations by
Months, 1947-1952. 23
Distribution of Object Sightings by Sighting Reliability Groups With
Evaluation Distributions for Each Group . 24
Distribution of Object Sightings Among the Four Sighting Reliability
Groups for All Years and Each Year . 25
Distribution of All Sightings by Sighting Reliability Groups, Segregated
by Military and Civilian Observers, With Evaluation Distribution
for Each Segregation 26
Distribution of Object Sightings by Reported Colors of Object(s) With
Evaluation Distribution for Each Color Group • 27
Distribution of Object Sightings by Number of Objects Seen per Sighting
With Evaluation Distribution for Each Group 28
Distribution of Object Sightings by Duration of Sighting With Evaluation
Distribution for Each Duration Group . 29
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