condition mean min max 2 h after light 0.7933548333333333 0.249919 1.23427 6 h after light 0.5866756666666667 0.201785 0.875644 10 h after light 0.9008375000000001 0.554664 1.20429 14 h after light 0.7943465 0.375512 1.21722 18 h after light 1.0499561666666668 0.683598 1.51215 2 h after dark 1.279216 0.612786 2.0104