Hi ... what sort of oil pressure should I expect in at Cosworth engine running a HP oil pump, 15 50 oil at idle Cold and hot... ?

As it is Ive been running a mechanical gauge showing 85-90 psi Cold and 33-35 psi hot .. both at idle.

Now I have put in a 10 bar vdo sensor with a el. gauge and its showing 69-70 psi Cold and 23,8-18,6 psi hot .. witch I feel is a bit low .. or ?

please advice .. ?