condition mean min max 4 h after light 8413.6 8413.6 8413.6 8 h after light 10930.65 8502.3 13359.0 12 h after light 13831.95 12563.1 15100.8 4 h after dark 12967.45 12521.3 13413.6 8 h after dark 9095.45 7143.3 11047.6 12 h after dark 6052.4 5400.2 6704.6