condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.2632415 0.0 0.526483 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 0.0 0.0 0.0