condition mean min max 0 h after light 8.34036 6.26962 10.4111 4 h after light 4.34126 3.67549 5.00703 8 h after light 5.686325 5.00218 6.37047 4 h after dark 10.17207 9.98524 10.3589 8 h after dark 8.718875 7.67677 9.76098 12 h after dark 8.68525 7.1073 10.2632