How do I find how many days there are that have a temperature between 10 and 30

I need help finding how many days there are in a year that have a temperature between 10 and 30 from multiple spreadsheets. I have the spreadsheets coming from a folder using:

source_directory = 'C:\Users\thoma\OneDrive\Desktop\Project 1';

source_file = dir(fullfile(source_directory, '*.csv'));

TempLow = file_data(:, 1);

TempHigh = file_data(:, 2);

The TempHigh and TempLow only show 30 data points each when it should be 365 data points each.

TempLow = file_data(:, 1);
TempHigh = file_data(:, 2);
TempC = [TempLow, TempHigh];

Temp = input('Enter a temperature: ');

if Temp <= 10
    disp('Too Low')
    
elseif Temp >= 30
    disp('Too High')
    
else 
    
    disp('Comfortable'), disp(TempCDays)
     
end

(Calculate the total number of days with comfortable temperature (10-30 degrees Celsius) and show the result on the Command Window)

Answer 1

[madhan ravi]

Use &

[Thomas Portsmouth]

Where?

[madhan ravi]

 Ndays = nnz((Temp > 10) & (Temp < 30))

[Thomas Portsmouth]

This results with an answer of 547 which is impossible because there is only 366 days. Am I entering this in right?

TempC = [MinTemp_Year MaxTemp_Year];
TempCDays = nnz((TempC >= 10) & (TempC <= 30));

Temp = input('Enter a temperature: ');

if Temp <= 10
    disp('Too Low')
    
elseif Temp >= 30
    disp('Too High')
    
else  
    disp('Comfortable'), disp(TempCDays)
end

[Thomas Portsmouth]

Nevermind, I just had to change the (TempC >=10) to (MinTemp_Year > 10) and vida versa for the next value. Thanks