condition mean min max 4 h after light 8.8032965 8.148262 9.458331 8 h after light 8.651596000000001 7.384838 9.918354 12 h after light 7.509885000000001 7.172653 7.847117 4 h after dark 7.5395025 6.970946 8.108059 8 h after dark 7.659593 7.47796 7.841226 12 h after dark 7.725226 7.725226 7.725226