condition mean min max ZT0-3 148.9 148.9 148.9 ZT4-7 72.4 72.4 72.4 ZT8-11 75.55000000000001 75.55000000000001 75.55000000000001 ZT12-15 128.39999999999998 128.39999999999998 128.39999999999998 ZT16-19 134.75 134.75 134.75 ZT20-23 158.7 158.7 158.7