condition mean min max 4 h after light 3.83179 3.71334 3.95024 8 h after light 3.629125 3.38399 3.87426 12 h after light 5.13041 4.91194 5.34888 4 h after dark 5.7943549999999995 5.65483 5.93388 8 h after dark 5.20734 4.2872 6.12748 12 h after dark 5.11219 5.07902 5.14536