condition mean min max 2 h after light 9.45044 9.06689 9.69648 6 h after light 15.157266666666667 14.356 15.7789 10 h after light 19.443 18.1106 21.8501 2 h after dark 38.6337 30.979 44.6491 6 h after dark 31.784666666666666 29.5938 34.8577 10 h after dark 40.8996 39.1333 43.9635