condition mean min max 0 h after light 12.6721 12.3435 13.0007 2 h after light 6.15655 6.03014 6.28296 4 h after light 3.56061 3.49139 3.62983 8 h after light 4.605945 3.58308 5.62881 12 h after light 7.690995 7.27079 8.1112 2 h after dark 10.036285 8.75807 11.3145 4 h after dark 8.780175 8.17631 9.38404 8 h after dark 10.197305 9.75601 10.6386 12 h after dark 11.7049 10.3271 13.0827