Name Sunday, 20 of April Saturday, 19 of April average on Sunday average for 7 days 1 day 13 ? 12 13 2 days 2 ? 1 2 3-4 days 1 ? 0.25 1 5-7 days 1 ? 1.2 1 amount of selected 17 ? 14 17 total 17 ? 14 17