16.3 months
22.9 months
n/a
3.0 rounds
3.5 reports
very difficult
12.0 months
28.0 months
n/a
3.0 rounds
2.0 reports
very easy
30.4 months
32.5 months
n/a
2.0 rounds
2.0 reports
moderate
16.6 months
33.0 months
n/a
3.0 rounds
3.0 reports
difficult
15.5 months
35.9 months
n/a
1.0 rounds
2.0 reports
difficult
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a