condition mean min max ZT0-3 43.959383333333335 31.81655 57.82925 ZT4-7 29.25945 29.25945 29.25945 ZT8-11 33.8856 33.8856 33.8856 ZT12-15 96.966925 81.94335000000001 111.9905 ZT16-19 90.5949 90.5949 90.5949 ZT20-23 93.72915 93.72915 93.72915