condition mean min max 4 h after light 2736.6 2736.6 2736.6 8 h after light 2891.75 2286.1 3497.4 12 h after light 3881.7 3152.2 4611.2 4 h after dark 3852.4 2265.3 5439.5 8 h after dark 3858.25 3672.1 4044.4 12 h after dark 4071.8 3272.3 4871.3