condition mean min max 0 h after light 0.6303025 0.515159 0.745446 4 h after light 1.836135 1.80593 1.86634 8 h after light 1.1165605 0.874001 1.35912 4 h after dark 2.1118 1.86249 2.36111 8 h after dark 1.64269 1.40935 1.87603 12 h after dark 0.986033 0.685956 1.28611