condition mean min max 4 h after light 855.783592 749.108626 962.458558 8 h after light 689.4209185 679.905825 698.936012 12 h after light 748.3835045000001 738.542875 758.224134 4 h after dark 927.3537495 737.981013 1116.726486 8 h after dark 1002.8219765 777.770518 1227.873435 12 h after dark 877.924364 877.924364 877.924364