condition mean min max 4 h after light 0.020632 0.0 0.041264 8 h after light 0.0 0.0 0.0 12 h after light 0.02041555 0.0 0.0408311 4 h after dark 0.02974725 0.0 0.0594945 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0