condition mean min max ZT0-3 86.85 86.85 86.85 ZT4-7 123.9 123.9 123.9 ZT8-11 122.15 122.15 122.15 ZT12-15 89.35 89.35 89.35 ZT16-19 142.9 142.9 142.9 ZT20-23 194.3 194.3 194.3