function p5()

M = p5f(0,4,0,4,30,30,1,4.67);
max(M)
M = p5f(0,4,0,4,30,30,2,6.1);
max(M)
M = p5f(0,4,0,4,30,30,3,6.9);
max(M)
M = p5f(0,4,0,4,30,30,4,7.4);
max(M)
M = p5f(0,4,0,4,30,30,5,7.7);
max(M)
