condition mean min max 0 h after light 12.33845 11.3035 13.3734 2 h after light 11.2107 10.9873 11.4341 4 h after light 11.4352 10.803 12.0674 8 h after light 10.72545 9.1308 12.3201 12 h after light 17.8276 16.7481 18.9071 2 h after dark 16.3356 15.1578 17.5134 4 h after dark 14.4937 12.8004 16.187 8 h after dark 19.32335 18.2526 20.3941 12 h after dark 13.60445 11.4686 15.7403