condition mean min max 3 h after light 46.6798 43.8604 51.7569 6 h after light 52.8815 41.6516 74.2256 9 h after light 77.749 71.3965 84.471 12 h after light 86.740875 23.0595 111.976 3 h after dark 65.70933333333333 52.5639 73.6025 6 h after dark 31.0489 28.5398 34.961 9 h after dark 21.4039 18.6901 25.4909 12 h after dark 15.1493 14.8551 15.4435