condition mean min max ZT0-3 71.5 71.5 71.5 ZT4-7 35.9 35.9 35.9 ZT8-11 45.7 45.7 45.7 ZT12-15 33.15 33.15 33.15 ZT16-19 65.15 65.15 65.15 ZT20-23 49.900000000000006 49.900000000000006 49.900000000000006