size(400,400);

line(40,40,40,360);
line(40,360,360,360);


int px0 = 40;
int py1 = 0;
int py2 = 0;

int pa[] = {250,190,124,116,90,115,200,180,76,190,115, 189, 215, 50, 170, 125};
int pb[] = {300,234,250,260,210,205,260,276,290,310,267, 280, 290, 293, 299, 330};

for(int x = 0; x < 16; x++) {
  stroke(0);
  fill(0);
  line(38, 340 - (x * 20),40,340 - (x * 20));
  text(20 + (x * 20), 15, 343 - (x * 20));
  
  line(60 + (20 * x), 362, 60 + (20 * x), 360);
  text(x + 1, 57 + (20 * x), 380);

  if(py1 > 0) {
     fill(125,0,0);
     stroke(125,0,0);
     
     beginShape();
     vertex(px0, py1);
     vertex(px0 + 20, pa[x]);
     vertex(px0 + 20, 360);
     vertex(px0, 360);
     endShape(CLOSE);
   
     fill(0,125,0);
     stroke(0,125,0);
     beginShape();
     vertex(px0, py2);
     vertex(px0 + 20, pb[x]);
     vertex(px0 + 20, 360);
     vertex(px0, 360);
     endShape(CLOSE);
     
     px0 += 20;
  }
  py1 = pa[x]; 
  py2 = pb[x];   
}

save("activity14.png");