condition mean min max ZT0-3 0.6232075 0.6232075 0.6232075 ZT4-7 0.3590135 0.3590135 0.3590135 ZT8-11 0.53827 0.53827 0.53827 ZT12-15 0.6996765 0.6996765 0.6996765 ZT16-19 0.9113755 0.9113755 0.9113755 ZT20-23 0.488961 0.488961 0.488961