condition mean min max ZT0-3 223.25 223.25 223.25 ZT4-7 126.7 126.7 126.7 ZT8-11 183.64999999999998 183.64999999999998 183.64999999999998 ZT12-15 224.85 224.85 224.85 ZT16-19 207.9 207.9 207.9 ZT20-23 194.55 194.55 194.55