condition mean min max 0 h after light 7.316675 7.12994 7.50341 4 h after light 6.549685 5.46757 7.6318 8 h after light 5.45472 5.35175 5.55769 4 h after dark 6.947855000000001 5.72933 8.16638 8 h after dark 6.66158 6.24187 7.08129 12 h after dark 5.75839 5.46614 6.05064