condition mean min max ZT0-3 92.75 92.75 92.75 ZT4-7 76.4 76.4 76.4 ZT8-11 78.05 78.05 78.05 ZT12-15 93.5 93.5 93.5 ZT16-19 122.30000000000001 122.30000000000001 122.30000000000001 ZT20-23 149.25 149.25 149.25