condition mean min max 3 h after light 18.06705 10.7652 30.175 7 h after light 19.047175 10.9119 29.213 11 h after light 30.4552 22.0945 38.9489 2 h after dark 30.531875 23.2097 41.028 6 h after dark 24.0604 17.5393 31.5623 10 h after dark 22.054608333333334 12.5708 30.8145