condition mean min max ZT0-3 126.631112 126.631112 126.631112 ZT4-7 155.2512835 155.2512835 155.2512835 ZT8-11 154.8910405 154.8910405 154.8910405 ZT12-15 146.30898 146.30898 146.30898 ZT16-19 109.37285750000001 109.37285750000001 109.37285750000001 ZT20-23 103.32199299999999 103.32199299999999 103.32199299999999