condition mean min max ZT0-3 72.7 72.7 72.7 ZT4-7 44.6 44.6 44.6 ZT8-11 56.7 56.7 56.7 ZT12-15 83.15 83.15 83.15 ZT16-19 88.95 88.95 88.95 ZT20-23 55.150000000000006 55.150000000000006 55.150000000000006