condition mean min max ZT0-3 22.145254782499997 19.14973782 25.140771745 ZT4-7 24.1632836 23.69587377 24.63069343 ZT8-11 23.8213904325 22.257888594999997 25.38489227 ZT12-15 26.398816377499998 23.852722309999997 28.944910444999998 ZT16-19 34.4675176775 31.768291735 37.16674362 ZT20-23 41.464199715 40.95193558 41.97646385