Exercise 2. Use Excel to open the file Portland_Weather_Data_2013.xlsx, which should be in your P:MATLAB folder. If the file isn't there, see the instructions in the lab "Plotting Data". Note that the first column is the date and the second column is Portland's maximum daily temperature in degrees Fahrenheit. Load the Excel file into MATLAB by typing the following command: [data, txt, raw] -xlsreadPortland Weather Data 2013.xlsx; If you get an error message that says something like "Error using xlsread XLSREAD unable to open file Portland Weather_Data 2013.xlsx", check to make sure that you have saved the file Portland_Weather_Data 2013.xlsx in P:MATLAB and that you have changed the Current Folder to P:MATLAB