Name Sunday, 11 of May Saturday, 10 of May average on Sunday average for 7 days 1 day 13 ? 12 13 2 days 1 ? 0.75 1 3-4 days 0 ? 0.5 0 5-7 days 1 ? 0.5 1 amount of selected 15 ? 14 15 total 15 ? 14 15