condition mean min max 4 h after light 2.0237800000000004 1.90138 2.14618 8 h after light 1.7358799999999999 1.69743 1.77433 12 h after light 2.152235 1.97856 2.32591 4 h after dark 4.124945 3.63153 4.61836 8 h after dark 3.335045 3.31478 3.35531 12 h after dark 3.1457949999999997 2.95559 3.336