condition mean min max 0 h after light 9.218525 8.91566 9.52139 4 h after light 47.60595 40.7524 54.4595 8 h after light 45.6375 38.7616 52.5134 4 h after dark 27.85275 26.6437 29.0618 8 h after dark 25.029249999999998 22.3448 27.7137 12 h after dark 13.018255 8.71711 17.3194