condition mean min max 4 h after light 5.967094 3.3231660000000005 7.805213 8 h after light 7.505822 6.02541 9.919292 12 h after light 6.609452 5.410283 8.886742 16 h after light 8.74916 3.36235 12.634260000000001 4 h after dark 5.667693666666667 4.8441 6.328405 8 h after dark 3.762685 2.926312 4.504654