condition mean min max 0 h after light 0.130913 0.0 0.261826 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.1278895 0.0 0.255779