MATLAB if statement help VERY SIMPLE confused

I have a number 'h' that I input into this function 'finddata'. inside the function i have several if and elseif statements. But my problem is when i run anything greater than h = 25000, say h = 47000, by breakpoint debugging,the function does the right things and skips the if statement for h <= 11000, but then starts at the 11000 < h < 25000 interval and spits that out as my answer. Thats not right! it needs to go to the respective if statement. Am i coding this wrong?

    function [ T,P,rho ] = finddata(h)
    %UNTITLED2 Summary of this function goes here
    %   To find the Temperature, Pressure, and Density given altitude

    % conversion into SI
    % h = alt* ;

    g = 9.81;
    R = 287;

    if h <= 11000

    a1 = -6.5e-3;
    Tref1 = 288.16;
    href1 = 0;
    Pref1 = 101325;
    rho_ref1 = 1.2250;

    T = Tref1+a1*(h-href1);
    P = Pref1 * (T/Tref1)^(-g/a1/R);
    rho = rho_ref1*(T/Tref1)^(-g/a1/R-1);

    if else 11000 < h <= 25000

    Tref2 = 223.15;
    href2 = 11000;
    Pref2 = 2.2616e+04;
    rho_ref2 = 0.3636;

    T = Tref2;
    P = Pref2*exp(((-g)/(R*T))*(h-href2));
    rho = rho_ref2*exp(((-g)/(R*T))*(h-href2)-1);

    elseif 25000 < h <= 47000

    a3 = 3e-3;
    Tref3 = 223.15;
    href3 = 25000;
    Pref3 = 2.6490e+03;
    rho_ref3 = 0.0157;

    T = (Tref3) + (a3)*(h-href3);
    P = Pref3 * (T/Tref3)^(-g/a3/R);
    rho = rho_ref3*(T/Tref3)^(-g/a3/R-1);

    elseif 47000 < h <= 53000

    Tref4 = 223.15;
    href4 = 11000;
    Pref4 = 2.2616e+04;
    rho_ref4 = 0.3636;

    T = Tref4;
    P = Pref4*exp(((-g)/(R*T))*(h-href4));
    rho = rho_ref4*exp(((-g)/(R*T))*(h-href4)-1);

    elseif 53000 < h <= 79000

    a5 = -4.5e-3;
    Tref5 = 331.16;
    href5 = 47000;
    Pref5 = 251.9333;
    rho_ref5 = 0.0027;

    T = Tref5+a5*(h-href5);
    P = Pref5 * (T/Tref5)^(-g/a5/R);
    rho = rho_ref5*(T/Tref5)^(-g/a5/R-1);

    elseif 79000 < h <= 90000

    Tref6 = 223.15;
    href6 = 11000;
    Pref6 = 2.2616e+04;
    rho_ref6 = 0.3636;

    T = Tref6;
    P = Pref6*exp(((-g)/(R*T))*(h-href6));
    rho = rho_ref6*exp(((-g)/(R*T))*(h-href6)-1);

    elseif 90000 < h <= 105000

    a7 = 4e-3;
    Tref7 = 427.1600;
    href7 = 79000;
    Pref7 = 13.8573;
    rho_ref7 = 1.1639e-04;

    T = Tref7+a7*(h-href7);
    P = Pref7 * (T/Tref7)^(-g/a7/R);
    rho = rho_ref7*(T/Tref7)^(-g/a7/R-1);

    end
    end

function is as follows in script:

[T,P,rho] = finddata(h)

thank you!!

Answer 1

[Image Analyst]

You can't do 11000 < h < 25000. You need to do it as two separate tests:

if (11000 < h) && (h < 25000)

Same for all the other cases like that.

[Ben]

thank you so much #ImDumb