condition mean min max ZT0-3 71.9 71.9 71.9 ZT4-7 96.8 96.8 96.8 ZT8-11 73.0 73.0 73.0 ZT12-15 97.05000000000001 97.05000000000001 97.05000000000001 ZT16-19 116.5 116.5 116.5 ZT20-23 87.1 87.1 87.1