condition mean min max 3 h after light 5.08887 4.19345 6.40888 6 h after light 4.441393333333334 3.27645 5.17949 9 h after light 6.521013333333333 5.91489 7.02206 12 h after light 10.21883 8.85389 11.3534 3 h after dark 17.7382 15.1434 20.366 6 h after dark 12.043466666666665 10.5451 14.6086 9 h after dark 8.857813333333333 7.90868 10.0642 12 h after dark 3.61125 3.02758 4.1766