condition mean min max 4 h after light 2552.3 2552.3 2552.3 8 h after light 2995.35 2507.7 3483.0 12 h after light 2916.45 2727.7 3105.2 4 h after dark 2569.35 2378.2 2760.5 8 h after dark 3097.9 2893.4 3302.4 12 h after dark 3336.55 2918.1 3755.0