condition mean min max ZT0-3 74.35865 74.35865 74.35865 ZT4-7 92.08394999999999 92.08394999999999 92.08394999999999 ZT8-11 40.8808 40.8808 40.8808 ZT12-15 11.7362 11.7362 11.7362 ZT16-19 17.531100000000002 17.531100000000002 17.531100000000002 ZT20-23 30.155050000000003 30.155050000000003 30.155050000000003