condition mean min max 3 h after light 1.327605 0.830545 1.73104 6 h after light 1.62732 1.20585 2.39882 9 h after light 3.40626 3.2867 3.55098 12 h after light 3.0483025 2.12473 4.03721 3 h after dark 1.82287 1.45396 2.12927 6 h after dark 3.26266 2.17283 5.1457 9 h after dark 1.8827766666666668 1.38424 2.77395 12 h after dark 1.503655 1.37319 1.63412