condition mean min max ZT0-3 114.30000000000001 114.30000000000001 114.30000000000001 ZT4-7 64.3 64.3 64.3 ZT8-11 38.8 38.8 38.8 ZT12-15 114.7 114.7 114.7 ZT16-19 157.55 157.55 157.55 ZT20-23 141.8 141.8 141.8