condition mean min max 0 h after light 4.26051 3.98026 4.54076 4 h after light 4.36531 3.65904 5.07158 8 h after light 4.6005 4.57878 4.62222 4 h after dark 6.44407 6.07009 6.81805 8 h after dark 4.40004 3.33897 5.46111 12 h after dark 4.272965 3.92406 4.62187