Name Friday, 16 of May Thursday, 15 of May average on Friday average for 7 days 1 day 30 ? 28 30 2 days 2 ? 0.5 2 3-4 days 0 ? 1.2 0 5-7 days 0 ? 0.25 0 amount of selected 32 ? 30 32 total 32 ? 30 32