34 courses: maintenance Data analysis

2 days 1.809

1 year 1.420

2 days 1.440

1 day 793

2 days 1.446

1 day 962

6 sessions 635

1 day 793

1.131

1.131

1 day 793

623

6 sessions 1.089

Free

623

1 day 793

1 day 962

1 day 793

5 days 3.624

4 sessions 756

2 sessions 544

6 months 679

6 months 459

3 months 299

6 months 549

6 months 649

5 months 259

3 months 339

5 months 259

3 months 349

9 months 789