How to get the corresponding data from a table

I am trying to get the corresponding efficiency number from this efficiency map. I have list of speed and torque for which i need the corresponding efficiency number.

This is the code for efficiency calculation:

tr =[0:1:Trrated]; % list of torque values in increments of 1Nm
Nr =[0:100:Nrmax]; % specifies range of speed values in increment 100rpm
[X,Y] = meshgrid(Nr,tr); % defines x and y axis of torque-speed plot
Pr = X*pi/30.*Y; % Calculating the motor output or rotor power based on P=Tw
Pr(Pr>Prrated) = 0; % limiting power to 80kW
Iphd = -Iphm*(1-Nrrated./X); % field-weakening current above rated speed
Iphd(Nr>Nrrated) = 0; % and zero below rated speed 
Pin = Pr+3*Rs*((Y./k/3).^2)+(Tnl.*X.*(pi/30))+3*Rs*((Iphd).^2); % motor input power
Eff = Pr./Pin; % efficiency map based on the torque-speed ranges given
Tlim = Prrated./(Nr.*(pi/30)); % setting a torque limited curve based on max power and speed
Tlim(Tlim>Trrated) = Trrated; % max torque value set

[C,h] = contourf(X,Y,Eff,[0.7 0.85 0.9 0.92, 0.94, 0.96],'k'); % prepare for contour lines and spacing
clabel(C,h,'manual') ; % this displays the contour values
l = colorbar; % adds a colorbar to the right of the plot

From this i need to find the corresponding efficiency number for my speed and torque. Appreciate any help.

Thank you!

Answer 1

[Walter Roberson]

If the efficiency number is an individual entry stored in the efficiency map, then:

eff_number = interp2(X, Y, Eff, speed_of_interest, torque_of_interest)

[Ashik Chowdhury]

Perfect! Thanks :)