condition mean min max 4 h after light 30.127471 26.50208 33.752862 8 h after light 31.998011 25.854706 38.141316 12 h after light 25.796208 25.73771 25.854706 4 h after dark 22.133905 21.215196 23.052614 8 h after dark 24.2714405 22.688175 25.854706 12 h after dark 27.873559 27.873559 27.873559