ASBH-SET-P
8 August 1986
PREDICTED SUNSPOT NUMBERS (SSN)
FOR USE WITH
THE INTERMEDIATE AND SHORT DISTANCE (ISD)
AND AIR/GROUND (A/G)
SKY WAVE PROPAGATION CHARTS
1987
JANUARY .......................... 15
FEBRUARY. ........................ 17
MARCH ............................ 19
APRIL ............................ 22
MAY .............................. 25
JUNE ............................. 28
NOTE: LIST OF UPDATED SUNSPOT NUMBERS WILL PERIODICALLY BE PROVIDED
TO YOUR OFFICE.
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