|
Below 140 (Below 63.5)
|
15 (103, 1.03)
|
20 (138, 1.38)
|
|
140 to 170 (63.5 to 77.1)
|
18 (124, 1.24)
|
25 (172, 1.72)
|
|
170 to 200 (77.1 to 90.1)
|
20 (138, 1.38)
|
30 (207, 2.07)
|
|
200 to 230 (90.1 to 104)
|
20 (138, 1.38)
|
40 (276, 2.76)
|
|
230 to 250 (104 to 113)
|
20 (138, 1.38)
|
40 (276, 2.76)
|
|
250 to 270 (113 to 144)
|
20 (138, 1.38)
|
45 (310, 3.10)
|
|
270 or more (144 or more)
|
20 (138, 1.38)
|
50 (345, 3.45)
|