Name Tuesday, 15 of April Monday, 14 of April average on Tuesday average for 7 days 1 session 22 ? 20 22 2 sessions 4 ? 4.2 4 from 3 to 5 sessions 4 ? 1.2 4 from 6 to 10 sessions 1 ? 0 1 amount of selected 31 ? 25 31 total 31 ? 25 31