condition mean min max 4 h after light 1.7434150000000002 1.46552 2.02131 8 h after light 0.6760685 0.500842 0.851295 12 h after light 1.91377 1.83985 1.98769 4 h after dark 3.42726 2.11592 4.12677 8 h after dark 1.30505 1.02616 1.60373 12 h after dark 1.7114 1.44216 1.9359