condition mean min max 4 h after light 5.17497 4.03154 6.3184 8 h after light 5.776875 5.66375 5.89 12 h after light 6.672470000000001 6.10766 7.23728 4 h after dark 7.3769833333333334 6.89565 7.63599 8 h after dark 6.296353333333333 5.62499 7.20853 12 h after dark 5.63177 5.06095 6.2226