i	y
0	2.8126
0	3.2084
0	3.5771
0	3.4228
0	4.0606
15	4.5645
15	2.7061
15	4.3560
15	3.3012
15	5.1091
30	4.4732
30	8.6097
30	4.9598
30	4.8945
30	3.6786
45	7.7524
45	5.9198
45	9.1892
45	9.7367
45	15.7416