condition mean min max 0 h after light 4.366715 3.97869 4.75474 4 h after light 4.36006 3.41942 5.3007 8 h after light 3.171615 3.1545 3.18873 4 h after dark 5.726825 4.72469 6.72896 8 h after dark 6.63867 6.6112 6.66614 12 h after dark 5.844865 4.37169 7.31804