Project Blue Book Special Report (second copy)

CODES
CODE 1. GENERAL
a. These cards (and the corresponding WORK SHEETS) contain data from
several sources. Columns referenced to the U. S, Air Force Technical
Information Sheet (Form A) must have at least one entry. If no data
are available for any column, the Y (or 12 punch) should be used,
b. Columns 22, 23, 2U, 25, 26, 36, 37, 38, 39, UO, Ul, 1*2, k}, UU, hS,
U6, hi $ U8, k9, SO, and 5>1 are calculated from data appearing in the
U. S. Air Force Technical Information-Sheet (Form A).'if the basic
data for these calculations are not available, the appropriate columns
are left blank.
c. If a number in any column is used to enter data, then X (or 11 punch)
qualifies the data as indicated in the Code for the specific column.
CODE 7 SIGHTING IDENTIFICATION
(Tiiis column may or may not
contain multiple punches) CODE 22 LOCAL SUN TIME
(Refers to date of G.C.T. observation)
X
Y
0
1
2
3
h
5
6
7
8
9
All sightings
Unit sightings, all observers
Unit sightings, single observers
Unit sightings, multiple observers
Object sightings
X
Y
0
1
2
3
U
6
7
8
9
Same day
Previous day
? CODE 23-26 LOCAL SUN TIME
(Calculated from G.C.T.,
date, latitude, and-longitude) CODE 27 LATITUDE CODE 31 LONGITUDE
X South Latitude
Y
0
1
2
3
h
5
6
7
8
9
X East Longitude
Y
0
1
2
3
k
$
6
•7
8
9
303