condition mean min max ZT0-3 102.92765 65.35294999999999 126.766 ZT4-7 35.47265 35.47265 35.47265 ZT8-11 19.552 19.552 19.552 ZT12-15 20.696525 20.0548 21.33825 ZT16-19 26.68385 26.68385 26.68385 ZT20-23 52.8356 52.8356 52.8356