Up to 1 Y = 0.7-3.6
1 - 3 Y = 0.7-4.3
3 - 5 Y = 0.9-5.2
5 - 7 Y = 1.1-6.1
7 - 9 Y = 1.4-7.1
9 - 11 Y = 1.8-8.4
11 - 13 Y = 2.4-9.5
13 - 15 Y = 3.1-10
15 - 17 Y = 3.5-8.7
17 - 20 Y = 3.2-7.2
More than  20 Y = 3.4-6.5