How to plot seasonal cycle

Hello!

I have several .txt files that contain daily measurements of temperature and relative humidity (see attached file).

I want to plot 4 seasonal graphs, both for T and RH, for all my files.

So far what I've done is that I access all these files. But how do I continue? Thanks in advance! (I'm on Matlab 2019a)

% Variables

vars={'Temperature'; 'Relative humidity'};

years = {'2015'; '2019'};

varunits={'Celsius'; '%' };

%Starting loop for all files

for i=1:size(stations,1)

name = stations( i, 1 );

network = stations (i, 'Network');

lat = stations(i, 'Lat' );

lon = stations(i, 'Lon' );

%% Here we make the selection based on network and station

network.(1);

name.(1);

networkstr = char(network.(1));

namestr = char(name.(1));

indx = strfind (list1, namestr) ;

for j = 1:size(indx, 1)

if (indx{j,1}>0)

if (strfind (list1{j,1}, '2015') > 0)

if (strfind (list1{j,1}, 'Hourly') > 0)

if (strfind(list1{j,1}, 'txt') > 0)

disp(list1{j,1})

B = importdata(list1{j,1}, ',', 1);

Data = B.data;

Data = array2table(Data);

end

end

end

end

end

end