Step number = 20 
Step time = 50.000000 
Stop time = 1000.000000 

Density steps	 Iteration number
0 	 3
1 	 3
2 	 2
3 	 3
4 	 3
5 	 3
6 	 2
7 	 21
8 	 2
9 	 1
10 	 21
11 	 1
12 	 2
13 	 1
14 	 2
15 	 1
16 	 1
17 	 21
18 	 21
19 	 1