condition mean min max 4 h after light 1314.0 1314.0 1314.0 8 h after light 1546.1 1109.8 1982.4 12 h after light 2790.0 1987.3 3592.7 4 h after dark 3875.25 3174.7 4575.8 8 h after dark 4150.4 3948.7 4352.1 12 h after dark 3639.1 3115.3 4162.9