How to find the mean of a column in a matrix using for loop?

For part B I have to use for loop to find the average of each column. I am getting the correct output but I am getting 5 of the same outputs. For part C I need to find the mean of all the temperatures, but I keep getting answers from 1:5.

%% Part A

TempSenVal=[58.3 59.2 60.2 63.0 63.3; 62.5 63.8 64.9 65.2 65.8;...
    63.2 64.2 65.3 67.8 67.9; 64.0 65.1 67.8 68.2 69.1; 65.5 66.0 67.9 68.9 70.2]

%% Part B
for k=TempSenVal
mean(TempSenVal);
end
%% Part C
n=length(TempSenVal);
for k=TempSenVal
mean(n);
end

Answer 1

[KSSV]

TempSenVal=[58.3 59.2 60.2 63.0 63.3; 62.5 63.8 64.9 65.2 65.8;...
    63.2 64.2 65.3 67.8 67.9; 64.0 65.1 67.8 68.2 69.1; 65.5 66.0 67.9 68.9 70.2] ;
[m,n] = size(TempSenVal) ;
M = zeros(1,n) ; 
for i = 1:n
    M(i) = mean(TempSenVal(:,i)) ; 
end
% just use mean 
M

M = 1×5

62.7000 63.6600 65.2200 66.6200 67.2600

mean(TempSenVal)

ans = 1×5

62.7000 63.6600 65.2200 66.6200 67.2600

[Hunter Nau]

How do I get the mean for the entire matrix

[KSSV]

mean(TempSenVal(:))