condition mean min max 0 h after light 1.1574499999999999 1.05325 1.26165 4 h after light 0.421574 0.414639 0.428509 8 h after light 1.4712749999999999 1.07024 1.87231 4 h after dark 1.8643635 0.826067 2.90266 8 h after dark 1.2512945 0.414189 2.0884 12 h after dark 1.040817 0.821674 1.25996