1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
x,y -0.5,0.5 -1.0,1.0 -1.5,1.5 -2.0,2.0 -2.5,2.5 -3.0,3.0 -3.5,3.5 -4.0,4.0 -4.5,4.5 -5.0,5.0 -5.5,5.5 -6.0,6.0 -6.5,6.5 -7.0,7.0 -7.5,7.5 -8.0,8.0 -8.5,8.5 -9.0,9.0 -9.5,9.5 -10.0,10.0