condition mean min max 4 h after light 0.0088703 0.0 0.0177406 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.013211 0.0 0.039633 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0031921 0.0 0.0095763