condition mean min max 0 h after light 1.203155 1.19132 1.21499 2 h after light 0.8696425 0.753753 0.985532 4 h after light 0.629226 0.430232 0.82822 8 h after light 0.6461865 0.582784 0.709589 12 h after light 1.492915 1.19651 1.78932 2 h after dark 1.494655 1.05275 1.93656 4 h after dark 1.96834 1.74766 2.18902 8 h after dark 1.661165 1.62206 1.70027 12 h after dark 1.043796 0.671482 1.41611