condition mean min max ZT0-3 116.1 116.1 116.1 ZT4-7 78.8 78.8 78.8 ZT8-11 64.05 64.05 64.05 ZT12-15 48.9 48.9 48.9 ZT16-19 65.05000000000001 65.05000000000001 65.05000000000001 ZT20-23 78.25 78.25 78.25