#polydispersity efficiency at 5e3       2e3     1e3
0	1.0	1.0	1.0
1.0	1.60	1.4	1.28		
2.5	16.0	9.3	6.6
5.0	123.0	54.0	29.3
8.0	232.5	107	60.0
10.0	284	133	75.0
12.0	284	133	77.0
15.0	275	132	79.0
20.0	265	126	73.0