3. For the following data set; z [km] TK Mass number 100 200 29 120 300 275 140 500 26 160 700 24.5 180 950 200 1230 21.5 23 L a) Write a MATLAB code to compute the relative decrease in gas pressure in steps of 20 km between 100 km and 200 km height. b) Compute the relative decrease in gas pressure in steps of 20 km between 100 km and 200 km height assuming H(z) constant between 100 to 200 km. c) Plot your results in part a and part b on the same graph and explain the differences by comparing with real decrease in gas pressure by height. (Assume a mean Earth radius of 6371.0 km., Include your MATLAB script, and plots from the software's Figure Window.) 3. For the following data set; z [km] TK Mass number 100 200 29 120 300 275 140 500 26 160 700 24.5 180 950 200 1230 21.5 23 L a) Write a MATLAB code to compute the relative decrease in gas pressure in steps of 20 km between 100 km and 200 km height. b) Compute the relative decrease in gas pressure in steps of 20 km between 100 km and 200 km height assuming H(z) constant between 100 to 200 km. c) Plot your results in part a and part b on the same graph and explain the differences by comparing with real decrease in gas pressure by height. (Assume a mean Earth radius of 6371.0 km., Include your MATLAB script, and plots from the software's Figure Window.)