Name Saturday, 19 of April Friday, 18 of April average on Saturday average for 7 days 1 day 244 ? 169 244 2 days 8 ? 6 8 3-4 days 4 ? 2.8 4 5-7 days 2 ? 2 2 amount of selected 258 ? 180 258 total 258 ? 180 258