condition mean min max ZT0-3 85.4 85.4 85.4 ZT4-7 97.1 97.1 97.1 ZT8-11 94.0 94.0 94.0 ZT12-15 89.80000000000001 89.80000000000001 89.80000000000001 ZT16-19 97.0 97.0 97.0 ZT20-23 91.35 91.35 91.35