condition mean min max 4 h after light 0.1093615 0.0 0.218723 8 h after light 0.0 0.0 0.0 12 h after light 0.143541 0.0 0.287082 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