condition mean min max 4 h after light 3.48597 3.474 3.49794 8 h after light 6.24029 5.87715 6.60343 12 h after light 5.20005 4.60579 5.79431 4 h after dark 6.800676666666667 6.09819 7.38037 8 h after dark 4.417903333333333 3.94383 4.95847 12 h after dark 3.73673 3.38278 4.17344