condition mean min max 0 h after light 2.83847 2.33929 3.33765 4 h after light 1.667765 1.44458 1.89095 8 h after light 2.3076749999999997 2.02046 2.59489 4 h after dark 2.998085 2.23666 3.75951 8 h after dark 2.8387000000000002 2.67534 3.00206 12 h after dark 1.60972 1.55743 1.66201