"Length"	"Frequency"
"6-<8"	6
"8-<10"	23
"10-<12"	30
"12-<14"	35
"14-<16"	32
"16-<18"	48
"18-<20"	42
"20-<22"	40
"22-<24"	28
"24-<26"	27
"26-<28"	26
"28-<30"	14
"30-<35"	27
"35-<40"	11
"40-<45"	2