condition mean min max ZT0-3 24.15 24.15 24.15 ZT4-7 34.2 34.2 34.2 ZT8-11 36.1 36.1 36.1 ZT12-15 33.150000000000006 33.150000000000006 33.150000000000006 ZT16-19 75.35 75.35 75.35 ZT20-23 84.8 84.8 84.8