condition mean min max ZT0-3 95.4 95.4 95.4 ZT4-7 88.9 88.9 88.9 ZT8-11 60.650000000000006 60.650000000000006 60.650000000000006 ZT12-15 71.2 71.2 71.2 ZT16-19 86.15 86.15 86.15 ZT20-23 72.0 72.0 72.0