condition mean min max 4 h after light 1.0204515 0.703823 1.33708 8 h after light 0.8953375 0.842494 0.948181 12 h after light 1.572395 1.53491 1.60988 4 h after dark 2.1832966666666667 1.9519 2.55726 8 h after dark 2.14494 1.95987 2.40837 12 h after dark 0.8043663333333333 0.481246 1.0266