Name Saturday, 19 of April Friday, 18 of April average on Saturday average for 7 days 1 day 63 ? 58 63 2-3 days 5 ? 3.5 5 4-7 days 1 ? 0.75 1 8-14 days 0 ? 1 0 15-31 days 3 ? 1.5 3 amount of selected 72 ? 65 72 total 72 ? 65 72