condition mean min max ZT0-3 57.121759 57.121759 57.121759 ZT4-7 90.2023375 90.2023375 90.2023375 ZT8-11 94.664205 94.664205 94.664205 ZT12-15 109.87643249999999 109.87643249999999 109.87643249999999 ZT16-19 76.059891 76.059891 76.059891 ZT20-23 60.717343 60.717343 60.717343