condition mean min max 0 h after light 7.877275 7.45003 8.30452 2 h after light 8.044445 7.76961 8.31928 4 h after light 5.52612 5.4269 5.62534 8 h after light 9.266635 5.71757 12.8157 12 h after light 24.45525 23.6319 25.2786 2 h after dark 25.15625 23.2387 27.0738 4 h after dark 16.9053 15.1866 18.624 8 h after dark 16.7639 14.011 19.5168 12 h after dark 5.7684 4.43232 7.10448