how can i use if condition for a 3 Dim matrix

Hi everybody, I have 3 matrices(T,TP,RH) with (11323*60*9)dimemtions and 1 matrix with(11323*60).I want to have an output matrix with (11323*28*60) with this condition: T-Tp<2.5 & RH>80 & R=0; means i want a logical 3D matrix that be contains all these condition how can i do it plz help me. thank you all