condition mean min max 0 h after light 2.34732 1.73586 2.95878 2 h after light 3.39799 2.89825 3.89773 4 h after light 2.1865595 0.992569 3.38055 8 h after light 3.129265 2.09147 4.16706 12 h after light 8.463555 7.8454 9.08171 2 h after dark 9.71358 8.25776 11.1694 4 h after dark 5.67436 5.1442 6.20452 8 h after dark 5.59025 5.53193 5.64857 12 h after dark 4.318005 4.15807 4.47794