100Hz- 		no foam		2in foam	4in foam
0		130		130		130
1		113.8		105.2		99.3
2		103.3		99		92
3		95.7		92.5		83.6
4		88.3		84.8		78.1
5		83		79.9		75.7
6		79.2		74.9		70.6
7		73.2		73		72.1
8		81.9		80.6		78.2
9		83.6		82.7		79.6
10		84.1		81.6		79.1
15		83.5		79.9		78
20		81.2		78.5		77.2
25		79.6		79.1		76.5
30		78.9		78.1		75.7
35		77.9		76.9		74.8
40		74.5		72.3		74.2
45		73.7		72.8		67.1
50		74.3		72		66.3
55		72.4		66.5		63.4