condition mean min max 4 h after light 4432.3 4432.3 4432.3 8 h after light 4821.55 4057.1 5586.0 12 h after light 4851.65 4515.9 5187.4 4 h after dark 3670.7 3130.6 4210.8 8 h after dark 2970.7 2963.4 2978.0 12 h after dark 2542.5 2350.0 2735.0