condition mean min max 4 h after light 16.1588 16.0011 16.3165 8 h after light 16.2293 15.6383 16.8203 12 h after light 18.2801 15.8941 20.6661 4 h after dark 16.09065 15.7084 16.4729 8 h after dark 14.2158 13.7034 14.7282 12 h after dark 14.50605 13.2742 15.7379