condition mean min max ZT0-3 835.15 835.15 835.15 ZT4-7 820.7 820.7 820.7 ZT8-11 790.9 790.9 790.9 ZT12-15 631.9000000000001 631.9000000000001 631.9000000000001 ZT16-19 726.0 726.0 726.0 ZT20-23 823.8 823.8 823.8