1990's Rear Wing (Monza, Spa) Lift to Drag Ratio

[Testdrive]

I just wanted ask does anyone know Lift to Drag Ratio for low down-force circuits?
It's seems like it's 2/1 for high down-force circuits, 3/1 for Medium circuits, I'm assuming low down-force circuits it's 4/1? Tracks from 90's like Monza, Spa, Germany?

Thanks