condition mean min max 4 h after light 687.4331685 557.539749 817.326588 8 h after light 530.724054 518.29919 543.148918 12 h after light 596.851994 537.847441 655.856547 4 h after dark 754.2983194999999 630.949499 877.64714 8 h after dark 833.9968665 655.856547 1012.137186 12 h after dark 680.945625 680.945625 680.945625