Q$2.($Learning Outcome $2)$ Use Scilab to read the heat release rate stored in the file named as $"$Q$2\_$heat release rate.csv$"$ which contains the measured heat release rate for full$-$scale upholstered chair from the four selected fire tests. Please download the csv file from the "Assignment Brief" folder at the course Canvas.

You are required to write a Scilab function with the header avg$\_$peak$\_$hrr $=$ read$\_$hrr$($input$\_$filename$)$ which could read the input of the full path of the csv file stored at your local hard disk. The defined function read$\_$hrr shall be able to:

$(1)$ Plot the heat release rate curve of the $4$ fire tests for the upholster chair side$-$by$-$side on the same figure with appropriate labels;

$(2)$ Indicate the peak heat release rate and the time to peak heat release rate for each test; and

$(3)$ Calculate the averaged peak heat release rate avg$\_$peak$\_$hrr from the four selected fire tests