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CORRECTION 
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l orm Approved; Budget Bureau No. 41-R125R 
GENERAL INSTRUCTIONS 
(See observing handbook for more details) 
1. Fill in all blanks on upper left-hand side of this form. 
2. Check appropriate box in column 32. 
3. Before entering, convert: 
a. all temperatures to °C. 
b. all pressures to mi 11ibars. 
c. if conversion tables not available, enter values as observed, 
followed by letters or abbreviations for the first 
entry on each form, (‘77,5°F”, “29 905 in.", etc.) 
4. Begin a new sheet each month, voyage, ocean and quadrant. 
5. Transmit data in 5-figure groups from unshaded columns and 
remarks. See observing handbook, section 1-04 for handling 
missing data. 
3-HOUR 
PRESS. 
CHANGE 
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WAVES (Make as many groups as 
patterns observed) 
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ADDITIONAL MESSAGE GROUPS 
AND REMARKS 
(More swe// groups, 2 I S E S E S R s , /CE 
C 2 KDjre , Wind Shifts, beginning 
and ending of prec/p., freak 
waves, etc.) 
REPLACES WR FORM 61B-S WHICH IS OBSOLETE. EXISTING STOCKS SHOULD BE DESTROYED AFTER JANUARY 1, (<•* 
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