Test on Forecasts for September 3, 1999

There was a g/m storm  (Ap=29.5) during the first semi diurnal interval and D state (Ap=11) during the second one.
 
 

  31 1 2 subtotal
SSM 0.5 0.5 0.5 1.5
SEC 0.5 0.5 0.5 1.5
Meudon 0.5 0.5 0 1