condition mean min max 4 h after light 885.3815955 622.547338 1148.215853 8 h after light 1106.71317 1026.232745 1187.193595 12 h after light 1084.551717 902.563685 1266.539749 4 h after dark 2546.9850525 1333.592405 3760.3777 8 h after dark 2421.1134859999997 1794.886973 3047.339999 12 h after dark 2039.751903 2039.751903 2039.751903