condition mean min max ZT0-3 62.48303333333333 46.79535 75.01585 ZT4-7 37.104 37.104 37.104 ZT8-11 31.47945 31.47945 31.47945 ZT12-15 45.758224999999996 38.56225 52.9542 ZT16-19 55.6582 55.6582 55.6582 ZT20-23 72.2796 72.2796 72.2796