condition mean min max 4 h after light 435.280509 389.898367 480.662651 8 h after light 343.1577915 247.30898 439.006603 12 h after light 197.768352 147.93922 247.597484 4 h after dark 74.8465155 40.77759 108.915441 8 h after dark 52.984138 50.298632 55.669644 12 h after dark 120.798973 120.798973 120.798973