condition mean min max ZT0-3 5.1024125 4.74971 5.455115 ZT4-7 2.81759 2.81759 2.81759 ZT8-11 2.91106 2.91106 2.91106 ZT12-15 0 0 0 ZT16-19 4.955965 4.955965 4.955965 ZT20-23 6.56266 6.56266 6.56266