Finding values of same time every week. code provided, data provided. 4D-matrix

Hey

I have coded this partly..but am not sure, since what i get is only partial data. so i have a matrix 4D, it has dimensions: xV(6,24,63,15) ---> meaning: xV(min,hour,day,customer).. the data is collected every 10 min for 63 days for 15 customer. so that is why first 6 row is 10 min interval.

what i want is that i can collect the data for lets say monday every week and use it for plot. meaning there is 63/7 = 9 mondays.. 9 mondays having 24 hours where each hour has 6 data(every 10 min). i want for each of those hour each monday each 10 min a new matrix..so i can take the mean of it and plot..

is this possible?

i have come so far..but no luck:

    n = 0;
    m = 0;
    while(n<24)
    n = n + 1;
        while(m<6)
        m = m + 1;
        Va(:,m) = x(m,n,1:63,1); %(min,hour,day,line)
        Vb(:,m) = x(m,n,1:63,1);
        Vc(:,m) = x(m,n,1:63,1);
        end

    end

thanks again