condition mean min max 3 h after light 40.8868 39.1307 42.5617 6 h after light 25.542 23.5985 28.1786 9 h after light 22.9942 21.6705 25.3497 12 h after light 23.32133333333333 21.7511 24.6924 3 h after dark 20.6639 19.9283 21.1536 6 h after dark 34.13916666666667 33.1007 35.6868 9 h after dark 47.156 42.4383 50.4901 12 h after dark 57.271366666666665 50.4293 65.1537