condition mean min max 4 h after light 703.345648 650.282598 756.408698 8 h after light 613.0674584999999 612.080731 614.054186 12 h after light 702.139273 680.988963 723.289583 4 h after dark 586.3091025 555.693595 616.92461 8 h after dark 676.198427 598.730505 753.666349 12 h after dark 727.259892 727.259892 727.259892