During May 1999 the Sun had staked 56 geomagnetic quiet (Ap<20 nT) semi diurnal intervals and 6
 stormy ones.
SSM had predicted 46  GQIs and 2 GSI .
SEC - 41 GQIs and 3 GSIs, Meudon - 37 GQIs and 3 GSIs.
So one can see:
 
Rating list for April 99
Place GQIs GSIs Total
1 SSM : 0.82 SEC&M : 0.5 SSM : 0.77
2 SEC :0.73 - SEC : 0.71
3
M : 0.66 SMM : 0.33 M : 0.65

 
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