condition mean min max ZT0-3 59.85 59.85 59.85 ZT4-7 124.6 124.6 124.6 ZT8-11 124.6 124.6 124.6 ZT12-15 104.80000000000001 104.80000000000001 104.80000000000001 ZT16-19 84.3 84.3 84.3 ZT20-23 68.9 68.9 68.9