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
7.5 months
10.4 months
n/a
1.5 rounds
1.5 reports
very easy
3.2 months
4.2 months
n/a
1.8 rounds
2.3 reports
difficult
3.7 months
6.1 months
n/a
1.5 rounds
2.0 reports
difficult
1.2 months
2.3 months
n/a
2.0 rounds
1.0 reports
moderate
4.0 months
5.2 months
n/a
2.0 rounds
2.0 reports
moderate
3.0 months
4.0 months
n/a
2.3 rounds
3.0 reports
difficult
3.0 months
6.2 months
n/a
3.0 rounds
3.0 reports
very difficult
1.3 months
2.5 months
n/a
2.0 rounds
3.0 reports
difficult
2.0 months
3.0 months
n/a
2.0 rounds
2.0 reports
very difficult
3.0 months
6.5 months
n/a
2.0 rounds
2.0 reports
moderate
3.0 months
3.0 months
n/a
1.0 rounds
2.0 reports
n/a