length freq
3.005    6
3.255    7
3.505    9
3.755    3
4.005    3
4.255    4
4.505    6
4.755   11
5.005   26
5.255   24
5.505   17
5.755   17
6.005   14
6.255   11
6.505    8
6.755    4
7.005    7
7.255   11
7.505   11
7.755   11
8.005    9
8.255    6
8.505    4
8.755    3
9.005    3
9.255    2
9.505    2
9.755    4
10.005    3
10.255    2
10.505    2
10.755    1
11.005    1
11.255    0
11.505    1
11.755    0
12.005    1
12.255    0
12.505    1
   Inf    1
