condition mean min max 0 h after light 17.61915 14.9661 20.2722 2 h after light 15.26745 14.7685 15.7664 4 h after light 10.952605 8.90371 13.0015 8 h after light 13.71625 10.9555 16.477 12 h after light 13.4108 12.1328 14.6888 2 h after dark 16.53545 11.6744 21.3965 4 h after dark 21.36305 19.6294 23.0967 8 h after dark 19.2971 15.6647 22.9295 12 h after dark 16.7337 16.4718 16.9956