Which air pressure for winter tyres in wet and snow is the safest?

Hello, I drive a 90 HP Corsa D and usually drive alone. I have 155 winter tyres. Which air pressure is best for VR and HR regarding safety, so that you can drive over wet and snow most safely? Dear bit more pressure, so towards Eco or rather a bit less pressure, so direction of comfort? Please ask for your answers. Thank you in advance.