condition mean min max ZT0-3 25.450000000000003 25.450000000000003 25.450000000000003 ZT4-7 41.2 41.2 41.2 ZT8-11 11.45 11.45 11.45 ZT12-15 45.05 45.05 45.05 ZT16-19 22.8 22.8 22.8 ZT20-23 34.15 34.15 34.15