condition mean min max ZT0-3 89.15 89.15 89.15 ZT4-7 78.4 78.4 78.4 ZT8-11 83.55 83.55 83.55 ZT12-15 55.650000000000006 55.650000000000006 55.650000000000006 ZT16-19 85.6 85.6 85.6 ZT20-23 118.35 118.35 118.35