condition mean min max ZT0-3 871.65 871.65 871.65 ZT4-7 573.8 573.8 573.8 ZT8-11 654.4 654.4 654.4 ZT12-15 915.55 915.55 915.55 ZT16-19 1224.1 1224.1 1224.1 ZT20-23 1142.6 1142.6 1142.6