> I need to check the relation between temperature and aerosol conc. for each bin
It looks like you're comparing the median values of aerosol for each range (bin) of temperature.
I recommend using a box plot that shows the median values (horizontal lines in the middle of the boxes) and the quartile ranges and any outliers. This gives you much more information that merely displaying the medians alone.
% Read in data as a table
T = readtable('Data.xlsx');
% Define temperature bins (bin width = 5deg)
edges = floor(min(T.temp)/10)*10 : 5 : ceil(max(T.temp)/10)*10;
% Compute bin counts
bins = discretize(T.temp,edges);
% Plot results
boxchart(bins,T.Aer1)
% Set x-tick labels to show bin edges
ax = gca();
ax.XTick = 1:max(bins);
ax.XTickLabel = compose('[%.0f, %.0f] ',edges(1:end-1)',edges(2:end)');
xlabel('Temperature (deg c)')
ylabel('Aerosol (units)')
grid on
Or, if you want to switch axes,
figure()
boxchart(bins,T.Aer1,'Orientation','horizontal')
ax = gca();
ax.YTick = 1:max(bins);
ax.YTickLabel = compose('[%.0f, %.0f] ',edges(1:end-1)',edges(2:end)');
ylabel('Temperature (deg c)')
xlabel('Aerosol (units)')
grid on
