condition mean min max ZT0-3 27.35 27.35 27.35 ZT4-7 44.8 44.8 44.8 ZT8-11 46.6 46.6 46.6 ZT12-15 56.150000000000006 56.150000000000006 56.150000000000006 ZT16-19 22.7 22.7 22.7 ZT20-23 26.7 26.7 26.7