Name Sunday, 11 of May Saturday, 10 of May average on Sunday average for 7 days 1 day 137 ? 148 137 2 days 5 ? 6 5 3-4 days 3 ? 4.2 3 5-7 days 1 ? 2.8 1 amount of selected 146 ? 162 146 total 146 ? 162 146