condition mean min max 4 h after light 640.839634 546.770518 734.90875 8 h after light 425.5839775 363.784648 487.383307 12 h after light 352.74536950000004 294.045675 411.445064 4 h after dark 220.34326600000003 165.992937 274.693595 8 h after dark 157.49849799999998 98.602021 216.394975 12 h after dark 416.934179 416.934179 416.934179