15:00
5
natural
15:00 
11:00
0
20:00
0
27:00
0
28:00
3
28:00
0
30:00
0
14:00
0
15:00
0
10:00
0
10:00
0
12:00
0
35:00
1
21:00
1
28:00
5
17:00
0
15:00
0
15:00
0
15:00
3
12:00
0