condition mean min max ZT0-3 59.3596 59.3596 59.3596 ZT4-7 54.475899999999996 54.475899999999996 54.475899999999996 ZT8-11 39.6588 39.6588 39.6588 ZT12-15 49.5111 49.5111 49.5111 ZT16-19 68.8923 68.8923 68.8923 ZT20-23 56.1737 56.1737 56.1737