EUGENE F. URETZ, JOHN A. MCCLARY AND STEVE MORGAN 1247 
Table I. — Context Codes 
TABLE 1 - CONTEXT CODES 
CODE TYPE 
CODE FORMAT 
ANIMAL CODE 
A FOLLOWED BY A NUMBER FROM 0 TO 4095 
TEST CODE 
T FOLLOWED BY UP TO FIVE DECIMAL DIGITS 
STAFF CODE 
S FOLLOWED BY UP TO FIVE DECIMAL DIGITS 
n crM 1 t'^\A/cr» 1 ID ro pi\/p dp<^ii\/iai oifiiXQ 
SPECIMEN DATE 
Y FOLLOWED BY FOUR DIGITS INDICATING A 
DATE FROM JANUARY 1 (0101) TO DECEMBER 
31 (1231) 
SPECIMEN TIME 
X FOLLOWED BY FOUR DIGITS INDICATING 
A TIME FROM 0001 TO 2400 
OPTION CODE^ 
O FOLLOWED BY UP TO FIVE DECIMAL DIGITS 
EVENT TIME 
FOUR DIGITS INDICATING THE TIME OF ENTRY OF 
THE FIRST DATA ITEM UNDER A GIVEN TEST 
•?f O CODES ARE NOT FILED IN THE DAYFILE 
