NmF2                    
Month, format: hh
F10.7, format: hh.dec
LT, format: hh.dec
for selected month at 60.<= F10.7<= 300. for any real LT from [0.,24.]
Ap, format: hh.dec
at 60.<= F10.7<= 300. and 4<= Ap <= 50 for any real LT from [0.,24.]
NmF2 LT-variation              
at 60.<= F10.7<= 300. and 4<= Ap <= 50