SFI > 170 => Good Propagation
SN < 090 => Low Sun Spot#
SN > 180 => High Sun Spot#
Conditions A-In K-In
Quiet 0-7 0-2
Unsettled 8-15 3
Active 16-29 4
Minor Storm 30-49 5
Major Storm 50-99 6
Severe Strom >100 7-9
XRays @304A of 134 is Average
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Below Courtesy of DG2KBC
Red is Best, Blue is Poor
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